Advanced Search Operators

Exact Match
Use quotes to search for an exact word or set of words. Example: "the health consequences of smoking"

AND
To search for stories that match all search terms, include AND between the words. The results show stories that match all search terms. The order of your search words does not matter.
Example: smoking AND report

OR
To search for stories that may have one of several words, include OR between the words.
Example: youth OR adult

Using OR with AND
If OR is used in combination with AND, then OR will replace AND.
Example: smoking and youth or adult (Note that since OR will replace AND, the search will be for: smoking OR youth OR adult)