Search for an exact word or phrase
"search query"
Use quotes to search for an exact word or set of words.
Search for either word
query OR query
If you want to search for jobs that may have just one of several words, include OR (capitalized) between the words. Without the OR, your results would typically show only jobs that match both terms.
Exclude a word
NOT query
Add a NOT before a word to exclude all results that include that word. 
Include a "fill in the blank"
query * query
Use an asterisk (*) within a query as a placeholder for any unknown or "wildcard" terms.