Is there any way to search the IDE for a word, ignoring trailing hyphens like any other characters?

Question

IDE

Let's say I want to search for the word flex__col. I press Ctrl + Shift + F, enter flex__col, and I get the following words as a result:

flex__col-red
flex__col-green
flex__col-blue

I check the "word" box and nothing changes. If instead of hyphens there was an underscore, then it would change (ONLY flex__col would be found).
Is there any way to search for a word that can end with a hyphen (but doesn't have to) as well as a word that can end with an underscore, for example (but doesn't have to)?
I wrote such a regular expression and tried to search using regular expressions:
(flex__col)([^-])
But it captures one more character at the end, which is not very convenient. Are there better options?