The "AROUND" proximity search is neat as well, especially for words with dual meaning. like:
bootstrap AROUND(6) cpu
Finds "bootstrap" within 6 words of "cpu", which culls out most (not all) of the unwanted results about the bootstrap js library.
This article seems to cover most of the ones I'm aware of: https://ahrefs.com/blog/google-advanced-search-operators/
Edit: Changed around(6) to AROUND(6). Apparently the lowercase version doesn't work, as it's highlighting the word "around" in the results.