Exclude word(s) from App Store searches
How about leveraging a better search engine to accomplish the same task?

Use Google Advanced Search



Hit Advanced Search button and you get this:



Or directly type this in Google search bar:

monopoly -bingo site:itunes.apple.com

I'm not sure if doing a Web search will take into account the keywords associated with the app as supplied by the developer (as you may be intending to include/exclude them).

Note: No affiliation whatsoever with Google. Find it to be a decent enough Web search engine and recommend it for use (best used in incognito mode, without logging in).