+ (a plus sign before the word means it must be included)

- (a minus sign before the word means it must be excluded)

Use "..." quotes around an exact phrase

title: (when placed as the beginning of the search criteria, searches only web page titles)

t: (same as title)

host: (when placed as the beginning of the search criteria, searches on only one web site)

site: (same as host)

domain: (same as host:)

When using Boolean commands, they must be all upper case

AND (must contain all words)

OR (must contain at least one of the words)

AND NOT (must not have the words)

NEAR (words close by)

ADJ (words must be adjacent)

* (wild card search)

When you search for words, consider the proper case sensitivity (upper versus lower)