A status that's given to a keyword with very little to no search history on Google. The keyword will be inactive until its search traffic increases, when the keyword can start triggering your ads to appear.

• Keywords marked as "Low search volume" are associated with very little search traffic on Google, an indication that they're not very relevant to most customers' searches. For this reason, Google temporarily makes these keywords inactive so that they don't trigger your ads.
• If the number of search queries for these keywords increases even a small amount, they'll be reactivated and will start triggering your ads to show again. Our system checks and updates this status regularly.
• For example, the keyword might be considered too specific or obscure, or it was misspelled significantly. Keeping these keywords out of the ad auction helps Google Ads serve ads more efficiently and reduces the volume of keywords on our system. Before our system stops a keyword from joining the auction, it evaluates the number of searches on a given keyword worldwide over the past twelve months.
• When you have a keyword with low search volume, you have a couple of options:
  • You can choose to do nothing and wait for us to automatically check again in a week. If more people start searching for your keyword, we'll reactivate it. This option can be particularly helpful if you're advertising a new brand, term, or product.
  • You can remove the keyword and use the Keyword Planner to find additional keyword ideas.

More about low-traffic keywords

* Nguồn: Google