• use keywords with narrow meanings (ex: transmission could refer to cellular phones or automobiles)
• put the most important words in the front of the search
• put a "+" in front of any word that you want to include, and a "-" in front of any word that you want to exclude
• use commas between words to signify a word instead of a phrase, when using phrases, put quotation marks around it
• You may use a ';' (semi-colon) between expressions to represent a logical "AND" while a ',' (comma) represents
  an "OR". So, to search for APPLE and ORANGE, use "APPLE;ORANGE". You may also use full regular
  expressions in the search field.

Boolean Operators

• & = AND
• # = OR
• ! = NOT