Simple rules to remember:

Imbedded apostrophe's are OK.

Articles and Prepositions are recognized only when imbedded within a phrase. They are ignored in a WORD search.

PHRASE searches will search for the exact string that you enter.

For WORD searches:
   Separate words with a SINGLE space.
   Omit numbers, conjunctions, articles and prepositions.
   "ANY" is an "OR" search.
   "ALL" is an "AND" search.