Written by: Learning Objectives
This article explains why Google Ads campaigns often fail due to broad match keywords, hidden spend in “Other search terms”, poor campaign structure, weak negative keyword management, and landing page mismatches. It uses case studies from builders, plumbers, and dentists to demonstrate how tighter keyword targeting, exact match campaigns, and better landing pages improve lead quality and reduce wasted ad spend.
By the end of this module, you will be able to:
- Read a Google Ads Search Terms Report and identify where your budget is being wasted.
- Understand the difference between broad match, phrase match, and exact match – and why it matters enormously.
- Explain why Google hides a significant portion of your spend under “Other search terms” and what you can do about it.
- Build a tighter campaign structure that forces Google to spend your money only on the terms that actually convert.
- Calculate your true cost-per-relevant-click and use that number to make smarter budget decisions.
Key Concepts
Search Terms Report – Think of it like a receipt from a restaurant. You ordered a burger, but the receipt shows you were also charged for someone else’s dessert. The Search Terms Report shows you every actual search query that triggered your ad and what you paid for each click. It’s the most honest document in your Google Ads account – and most business owners never look at it.
Match Types – When you add a keyword to Google Ads, you’re also telling Google how loosely it can interpret that keyword.
- Broad Match – Google can show your ad for anything it considers remotely related. You type “home builder Melbourne” and Google shows your ad to someone searching “construction jobs near me.” You’re paying for it.
- Phrase Match – Your keyword must appear within the search query, but other words can surround it. More controlled than broad, but still leaky.
- Exact Match – You tell Google: show my ad only when someone searches this specific term (or very close variations). This is where you want to be.
“Other Search Terms” – A bucket Google uses to hide spend it can’t attribute to specific queries, citing user privacy. In practice, it often swallows more than half your budget. You cannot see these queries. You cannot optimise them. The money is gone.
Wasted Spend – Every dollar spent on clicks that have zero realistic chance of converting into a lead or sale. A home builder paying $36 per click for “Melbourne architects” is burning cash. The person searching that term is looking for an architect, not a builder.
Real-World Case Studies
Case Study 1: Apex Custom Homes – Residential Builder – Hawthorn, Melbourne
The Challenge: Apex Custom Homes was spending $1,700 per month on Google Ads. The director, Adrian, had briefed his previous agency on the keywords he wanted: “custom home builders Melbourne,” “dual occupancy builders,” “Melbourne home builders.” Sensible brief. The problem was that the campaign was running on broad match and phrase match, not exact match. Adrian had no idea. The agency hadn’t told him. He just knew the phone wasn’t ringing anywhere near as much as he expected.
The Strategy: When we pulled Adrian’s Search Terms Report, the picture was brutal. Out of $1,736 in spend, here’s where the money actually went:
| Search Term | Clicks | Cost |
|---|---|---|
| “melbourne architects” | 5 | $180 |
| “best dual occupancy builders melbourne” | 4 | $92 |
| “top 10 home builders” | 3 | $69 |
| “builders melbourne” | 3 | $69 |
| “custom builders melbourne” | 2 | $30 |
| “melbourne home builders” | 2 | $32 |
| Other search terms (hidden) | unknown | $899 |
| Subtotal – relevant terms | ~14 | ~$472 |
| Total spend | $1,736 |
More than $899 – over half the total budget – disappeared into “Other search terms.” Google doesn’t show you what triggered those clicks. You just pay.
Of the visible spend, only a handful of terms were genuinely relevant to Adrian’s business. We estimated roughly $60-$80 of the entire monthly budget went to clicks that had any real chance of converting.
The Results: We restructured the entire campaign around a single ad group: “custom home builder Melbourne” on exact match. We rewrote the landing page to speak directly to that search intent – what makes a true custom build different, the boutique nature of the business, the design-to-handover process. Within six weeks of the rebuild:
- Cost per click dropped from an average of ~$28 to $14.
- Enquiry rate from ad traffic increased by 3x.
- Monthly spend held at $1,700 but produced four qualified leads vs. one under the old structure.
The Lesson: Whoever sets the keywords and match types controls where your money goes. If you don’t specify exact match, Google will spend your budget wherever it likes under the banner of “finding you more customers.”
Industry Application: This applies to any trade or professional services business running Google Ads. The same dynamic plays out for plumbers in Parramatta, accountants in St Kilda, and dentists in Chermside. Broad match campaigns burn budgets quietly. Most business owners only find out when they dig into the Search Terms Report.
Case Study 2: Clearwater Plumbing – Plumbing & Gas – Parramatta, Sydney
The Challenge: Clearwater was a three-person operation running a $900/month Google Ads budget. Owner Mick had set up the campaign himself using Google’s recommended settings – which default to broad match. He was getting clicks, but most enquiries were for suburbs way outside his service area, and several were for blocked drains in commercial buildings he couldn’t service.
The Strategy: We audited the account and found Mick was paying for queries like “plumber training courses,” “plumbing supplies Sydney,” and “DIY drain unblocking.” None of these were potential customers. We rebuilt the campaign with:
- Exact match keywords only: “emergency plumber Parramatta,” “blocked drain Parramatta,” “gas fitter Parramatta.”
- Negative keywords added to block: training, course, supplies, tools, apprenticeship, DIY, how to.
- A tightly written landing page with explicit content: “Same-day service, Parramatta and surrounds, licensed gas fitter, upfront pricing.”
The Results: In the first 60 days post-rebuild, cost per lead dropped from $310 to $88. Monthly spend stayed the same. Mick went from 2-3 leads per month to 9-10, all within his actual service area.
The Lesson: Tight match types plus a strong negative keyword list is the combination that makes Google Ads work for small operators. Neither alone is enough.
Industry Application: Trades businesses are particularly vulnerable to this kind of waste because their keywords are often short and generic. “Plumber Sydney” looks simple, but on broad match it can trigger for dozens of irrelevant queries. Exact match protects the budget.
Case Study 3: Northwood Dental – Dental Practice – Chatswood, Sydney
The Challenge: Northwood Dental was running a Google Ads campaign with a $2,500/month budget managed by a general marketing agency (not a specialist). They were getting reasonable click volume, but conversion rates from ad traffic were under 2%. The principal dentist, Dr. Kim, felt like she was spending money to fill Google’s pockets.
The Strategy: We pulled the Search Terms Report and found broad match had caused their “dental implants” keyword to trigger ads for “dental school cost,” “fake teeth options,” “cheap dentures,” and “dentist cost without insurance.” Some of these searchers are years away from booking an implant consultation. We shifted the entire campaign to exact match across five core terms:
- “dental implants Chatswood”
- “dental implants near me”
- “emergency dentist Chatswood”
- “Invisalign Chatswood”
- “cosmetic dentist Chatswood”
Each keyword got its own dedicated landing page with explicit facts: Medicare Child Dental Benefit acceptance, HICAPS on-site, Saturday appointments, specific practitioner credentials.
The Results: Within 90 days:
- Conversion rate from ad traffic rose from 1.9% to 6.4%.
- Cost per booked appointment dropped from $420 to $128.
- Total leads per month more than doubled on the same budget.
The Lesson: Intent specificity is everything in healthcare advertising. Someone searching “dental implants Chatswood” is much closer to booking than someone searching “fake teeth options.” Exact match ensures you’re paying for the first group, not the second.
Industry Application: Any health or allied health practice – physios, optometrists, psychologists – faces the same challenge. The more specific the keyword, the warmer the lead. Exact match forces that specificity.
Implementation Guide
Step 1: Pull Your Search Terms Report
In Google Ads, go to Campaigns > Keywords > Search Terms. Set the date range to your last 30 days. Export it to a spreadsheet.
What it looks like: A list of every actual search query that triggered your ad, how many times it showed, how many clicks it got, and what you paid.
Pro tip: Sort by Cost (highest to lowest). Your biggest problem terms will appear at the top immediately. Look at the top 10 and ask honestly: “Would someone searching this buy from me?”
Step 2: Calculate Your Wasted Spend
Add up the spend on every query that has no realistic conversion potential. Add the “Other search terms” amount (visible at the bottom of the report). That total is your current waste figure.
What it looks like: “Of my $2,000 budget, $340 went to relevant terms. $1,660 went to waste.”
Pro tip: If “Other search terms” is more than 30% of your budget, your campaign has a structural problem. Over 50% – as in Adrian’s case – is a critical issue.
Step 3: Switch Everything to Exact Match
In the Keywords tab, change every keyword’s match type. In the interface, exact match keywords appear in square brackets: [custom home builders Melbourne].
What it looks like: Before: custom home builders Melbourne (broad). After: [custom home builders melbourne] (exact).
Pro tip: Don’t try to keep broad match keywords “just in case.” If a term is worth spending money on, it’s worth protecting with exact match. If you’re worried about volume, add more exact match terms – don’t loosen the match type.
Step 4: Build a Negative Keyword List
Any irrelevant query you found in your Search Terms Report becomes a negative keyword. Add these under Keywords > Negative Keywords.
What it looks like: A home builder adding negatives: “architect,” “owner builder,” “construction jobs,” “building inspection,” “renovation courses.”
Pro tip: Build your negative list before you launch a new campaign. Standard negatives for most businesses include: free, DIY, how to, course, training, apprenticeship, review, salary, jobs.
Step 5: Consolidate to Your Best Keywords
Rather than spreading budget across 20 keywords, identify your two or three highest-intent, highest-converting terms and focus budget there.
What it looks like: A plumber consolidates from 15 broad-match keywords down to four exact-match terms targeting their service area specifically.
Pro tip: One tightly targeted ad group with a matching landing page will always outperform a sprawling campaign with generic ad copy. Google rewards relevance with lower CPCs through Quality Score – focus wins twice.
Step 6: Match Your Landing Page to Your Keyword
Your landing page must mirror the search intent of your keyword. If someone clicks on “custom home builders Melbourne,” the page they land on should be specifically about custom home building in Melbourne – not your general homepage.
What it looks like: Dedicated landing pages for each service: custom builds, dual occupancy, knockdown-rebuild. Each page uses the keyword naturally, states explicit facts about the business, and has one clear call to action.
Pro tip: Google’s Quality Score (which directly affects your CPC) is partly calculated on landing page relevance. Better relevance = lower cost per click for the same position.
Common Pitfalls & Solutions
| Pitfall | Fix | Prevention |
|---|---|---|
| Running broad match without realising it | Switch all keywords to exact match immediately; review Search Terms Report | Set exact match as your default from campaign setup |
| Ignoring “Other search terms” spend | Treat this as a red flag; reduce it by eliminating broad/phrase match | Never let any match type other than exact run unsupervised |
| Too many keywords, too little budget | Consolidate to 3-5 highest-intent exact match terms | Focus on depth, not breadth – one well-funded keyword beats ten underfunded ones |
| Landing page doesn’t match the keyword | Build dedicated landing pages per keyword cluster | Plan landing pages before writing ad copy |
| No negative keywords | Build a negative list from your Search Terms Report immediately | Establish a standard negative list before every campaign launch |
| Trusting Google’s recommendations | Google’s automated suggestions typically increase spend, not efficiency | Treat all “recommendations” as upsells and evaluate each critically |
Practical Exercises
Quick Win (10 minutes): Log into your Google Ads account. Go to Keywords > Search Terms. Filter to the last 30 days. Sort by Cost. Write down the top five terms your budget went to. For each one, ask: “Would this person buy from me?” If the answer is no for even one, you have a wasted spend problem. Screenshot the report.
Deep Dive (45 minutes): Export your full Search Terms Report to Google Sheets. Create two columns: “Relevant” and “Wasted.” Classify every query. Total both columns. Calculate your waste percentage. This number is the single most useful metric you’ll find in your entire Google Ads account.
Real Business Application: If you’re a builder: search your own keywords in Google and note what comes up. Click “Other search terms you might like” in the Google Ads keyword planner. Every suggestion that isn’t directly related to your core service is a potential waste term. Add them to your negative keyword list before you spend another dollar.
SEO Keyword Intelligence
The following data supports content strategy for this topic in the Australian market. Use these terms to inform blog content, landing pages, and educational resources.
Data sourced from Ahrefs – Australian market (AU), April 2025.
| Keyword | Monthly Volume (AU) | Difficulty (0-100) | CPC (AUD) | Opportunity |
|---|---|---|---|---|
| google ads management | 1,700 | 8 | $11.00 | High – strong intent, low difficulty |
| google ads melbourne | 1,000 | 0 | $9.00 | High – local service intent |
| google ads agency melbourne | 900 | 2 | $7.00 | High – buyer-ready searchers |
| custom home builders melbourne | 900 | 54 | $1.50 | Medium – competitive but highly commercial |
| google ads transparency | 700 | 26 | $8.00 | Medium – content opportunity for awareness |
| home builders melbourne | 700 | 61 | $1.20 | Medium – competitive; exact match recommended |
| ppc management australia | 200 | 1 | $9.00 | High – national audience, buyer intent |
| luxury home builders melbourne | 600 | 54 | $0.90 | Medium – niche, high-value lead potential |
| builders melbourne | 600 | 65 | $1.30 | Low for SMBs – too broad and competitive |
| ppc agency australia | 150 | 2 | $20.00 | High – highest CPC signals strong buyer intent |
| google ads budget | 60 | 4 | $5.00 | Medium – educational content fits here |
| google ads fraud | 20 | – | $5.00 | Niche – suits awareness/trust content |
Keyword Strategy Notes:
- “google ads management” and “google ads agency melbourne” have low difficulty and strong commercial intent – ideal for any agency writing content in this space.
- “custom home builders melbourne” (900 searches/month, KD 54) shows there is consistent, high-intent demand. Builders running Google Ads should be bidding on this exact term.
- “builders melbourne” (KD 65) is too competitive and too broad for most SMBs – it’s a term worth excluding from exact match spend unless you have a significant budget.
- “google ads fraud” and “google ads transparency” are useful content marketing angles – business owners searching these terms are already frustrated and are prime candidates for a consultation offer.
Tools & Resources
Google Ads Search Terms Report – Free, inside your Google Ads account. Go to Keywords > Search Terms. This is the most important report in your account. Check it weekly.
Google Ads Keyword Planner – Free with a Google Ads account. Use it to discover new exact match keywords, estimate volume, and find negative keyword ideas.
Google Ads Negative Keyword Lists – Free. Build one shared list of irrelevant terms and apply it across all campaigns. Start with a base list of 30-50 terms and add to it every week from your Search Terms Report.
Ahrefs Keywords Explorer – Paid (from ~$129 AUD/month). Use it to validate Australian search volume before bidding on a keyword. Don’t assume a keyword gets searched – verify it.
Optmyzr – Paid. Sophisticated campaign management tool that automates match type audits and search term analysis. Useful once you’re spending $5,000+/month on Google Ads.
CallRail – Paid (from ~$60 AUD/month). Tracks which keywords and campaigns are driving actual phone calls, not just clicks. Essential if your primary conversion is a phone enquiry.
Screaming Frog – Free (up to 500 URLs). Use it to audit landing pages for keyword relevance – helps identify pages that don’t match the intent of the ads pointing to them.
Module Summary
- The Search Terms Report is your receipt – it shows you exactly where Google spent your money. If you haven’t looked at it in the last 30 days, you almost certainly have a wasted spend problem.
- Broad match and phrase match are the enemy of a tight budget – Google uses these to expand your reach into irrelevant territory. Exact match is the only way to maintain control over where your clicks come from.
- “Other search terms” is not a privacy feature – it’s a budget black hole – if it’s eating more than 30% of your spend, your campaign structure needs a rebuild, not an adjustment.
- One great keyword with a matching landing page beats twenty average keywords every time – consolidate your budget around your highest-intent terms, write ad copy and landing pages that mirror that intent exactly, and let Quality Score work in your favour.
Module produced by CMO Eugene – Ranked Digital Marketing, Australia. For enquiries about Google Ads audits and campaign rebuilds: ranked.com.au
