| Boolean Operator | 
    Description | 
    
    
    | OR | 
    Use 'OR' when you require only one of the search words to appear in the results.  Example: "city OR county" | 
    
    
    | NOT or - | 
    Use 'NOT' or '-' when you do not want to exclude results that contain a particular term. Examples: "economic development NOT support" or " economic development -support " | 
    
    
    | * | 
    Use '*' as a wildcard to search on all words that contain the letters you enter.  You must enter a minimum of three letters plus the '*' character.  Example: "employ*" would find "employ" or "employer" or "employee" | 
    
    
    | + | 
    Use '+' when you require the exact word to appear in all of the results. For multiple words, you must use put a + sign in front of each word that must be exact. Example: search on "+lipitor cholesterol" if you only want to retrieve results with the brand name "Lipitor" and the word "cholesterol", and no results with the generic synonym "Atorvastatin" |