How expert are you at finding what you need on the web? The Small Business Hub has 12 Quick Tips to Search Google Like An Expert, including this one:
4. Similar Words and Synonyms: Let’s say you are want to include a word in your search, but want to include results that contain similar words or synonyms. To do this, use the “~” in front of the word.
Example: “internet marketing” ~professional
The comments have a bunch more useful tips. Check them out and see if you learn something new.