The Key to Keywords
Searching the Web - Keywords & Phrases
How To Search - Tips & Tricks
Use “quotation marks”. Using quotes around a set of words will direct Google to search for those exact words, in that exact order.
Add a plus sign. Adding a plus sign before any word indicates that those words must appear in your search results. For example, “Julius Caesar” assassination + Brutus will give you results that only include information about Brutus.
Use OR. You can use OR (all caps) to include either of two search words. For example, soup recipe tofu OR fish should return recipes for soup that contain tofu or fish (or both). You could also search for soup recipe tofu OR fish OR chicken OR beef.
Add a minus sign. Adding a minus sign immediately before any word (no space in between!) indicates that you don't want those words to appear in your search results. For example, "Saturn -cars" will give you information about the planet, not the automobile.
Use NOT. In many search engines the word NOT (in all caps) is used, as in macaroni NOT cheese.
Boolean Search Simplified