The search modifier I use the most is the "-". If I search and a bunch of results have some common word that is not germane to my quest I'll put the dash in front of that word and search again. This is a simple and fast way to narrow things down. (There can be no space between the dash character and the word to exclude.)
I use this a lot on Amazon. For example, if I want an analog oven thermometer, searching for oven thermometer also gives me a bunch of digital models. I'll add the exclusion to the end of the search string and search again: "oven thermometer -digital" (without the quotes) and all the digital models are excluded.
JKJ