The video below recommends the following tips in your Google searches: 1 ) use simple, descriptive words 2) be specific in your word choice and 3) don't worry about capitalization, spelling, and punctuation.
Sample search:
etruscans amber amulets
1:44
Use quotation marks around two or more words to search for a specific phrase.
Sample search:
"wearing blanket"
18 seconds
Limit your search to a specific site OR a category of site (e.g. .edu domain).
Sample search:
site:org "chestnut flask"
21 seconds