Search Engine AND OR "phrase" AND NOT
Combine the Boolean logic tools provided here for super results.  Example: reefs AND NOT "Great Barrier Reef" Refines your search to sites that have the tied phrases.  Example: Ancient AND Egypt  will provide only sites that have both terms. Expands your search to sites that have at least one of the terms.  Ancient OR Egypt will provide more sites than the AND boolean term.  Some sites might be on other ancient civilizations and some sites might be on contemporary Egypt Refines your search to sites that have the specific phrase within quotation marks.  "Ancient Egypt" will only bring up the sites that have that specific phrase. Refines your search to sites that do not have a specific term.  Egypt AND NOT Ancient will give you sites about Egypt that are not about ancient Egypt
Altavista AND OR "Phrase" AND NOT
AltavistaCanada AND OR "Phrase" AND NOT
Yahoo Ancient +Egypt button on site "Phrase" Egypt -Ancient
Google AND OR "Phrase" NOT
Ask Jeeves        
HotBot AND OR "Phrase"  
Searchopolis AND OR "Phrase" NOT
Ah-ha.com        
AOL AND OR "Phrase" NOT
Excite AND OR   NOT
FAST AND OR "Phrase" NOT
GO        
MSN AND OR "Phrase" NOT