Perhaps you should try some spelling variations:
literature author » literature arts
literatur oral » literatura oral, literatur moral, literature moral
159 agenda » 1979 agenda, 1 agenda, 10 agenda
2 benda » 2 bends
ii a » i a
ii y » ii 1, ii 3, ii 4
ii 2 » i 2, ii 1

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 a) OR (ii _)) literatur oral ) OR ( 2 benda ((ii y) OR (ii 2)) literature author )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( 159 agenda ((ii a) OR (ii _)) literatur oral ) or ( 2 benda ((ii y) or (ii 2)) literature author ))".
• Adding a wildcard symbol may retrieve word variants: (( 159 agenda ((ii a) OR (ii _)) literatur oral ) or ( 2 benda ((ii y) or (ii 2)) literature author ))*.