site command Use to limit your search to authoritative websites: Add site:.domain after your search terms.
Preferred domains are .edu, .gov, and .org. Example: To search for cyberbullying in only .org sites, search for cyberbullying site:.org.
quotation marks Use to find a phrase: When searching for a concept that is a phrase, like global warming, enclose the phrase in quotation marks. Example: If searching for global warming, type "global warming" in the search box.