In many cases, long-tail keywords won’t show exact search volume directly in Google tools, especially if the query is very specific. But there are still a few practical ways to estimate their potential.
First, you can check broader parent keywords. If the main keyword has decent search volume, the long-tail variations usually still receive some traffic, even if tools show “0” or “–”. Many SEO tools group these searches together instead of showing them individually.
Another useful method is using Google Autocomplete and “People Also Ask”. If Google suggests the phrase automatically, that usually means real users are searching for something similar. It may not be high volume, but it indicates demand.