Perhaps you should try some spelling variations:
literature author » literature arts
literature oral » literature moral, literatura oral, literature morals
agenda iii » agenda i
agenda ii » agenda i, agenda iv, agenda _
2 anda » 2 andy
ii _ » i _
ii y » ii a, ii 1, ii 2

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( 159 ((agenda ii) OR (agenda iii)) a literature oral ) OR ( 2 anda ((ii y) OR (ii _)) literature author ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( 159 ((agenda ii) or (agenda iii)) a literature oral ) or ( 2 anda ((ii y) OR (ii _)) literature author ))*".