I have a very broad base of stuff I know about. This is very dangerous as my knowledge is spotty, and has holes in odd places. Worse, because I know lots of details one would expect only an expert to know in lots of fields, everyone assumes that I know all the fundamental stuff and have wisdom in areas where I merely have knowledge.
On some level I guess I “knew” that one could use + and - in a search. I never had because those aren’t the symbols for the Boolean operations of AND and NOT, so it never occurred to me to even try it!
You’ve given me a very powerful tool.
And as to using a Zip Code? Never thought of it. Wow!
Goody! I’m glad you found them useful. :)