I retagged a question to make it easier to find, but turned out, tags show in the result set but aren't more important than the text (free text search in question title, body, answers...).
Went to the Help Center and found out that one can search in certain tags only using:
[python] [curves] [import]
This is the result I wanted, but it's awkward to type and no regular user will know the
Is there any trick, like a hidden search form to search in favor of tags somewhere? Or a way to select multiple tags and get all matching answers which contain at least these tags? (Tags page shows related tags only, and one can't remove tags once combined)