Expanding a keyword list can increase reach when new terms match the prospect’s intent. This is a strategy note from the archive, not a performance guarantee.
How to test expansion
Collect close query variations, check their relevance to the landing page, and keep the new terms in a separate structure when that makes budget control easier. After launch, review search terms, irrelevant impressions, spend, and conversions.
More keywords without quality control can add unwanted traffic. Decide whether to scale from the data in the specific campaign.