As a user, I can’t think of a time when censoring a term has given me relevant results. It just serves to frustrate me. If Google doesn’t want to return a blank page, they ought to have a small section at the top that says something like, “No results found for [search terms]” and then another section following that clearly states it is excluding a term.

FaceBook Marketplace and Craigslist do something similar when there are no local results. They show results from outside your area but clearly call it out.