Perhaps you should try some spelling variations:
literature author » literature arts
literatur oral » literatura oral, literatur moral, literature moral
1979 agenda » 1979 wagenen
agenda ii » agenda iii, agenda i, agenda iv
2 benda » 2 bends
ii y » ii a, ii 1, ii 3
ii 2 » ii a, 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: (( 1979 agenda ii _ literatur oral ) OR ( 2 benda ((ii y) OR (ii 2)) literature author )).
• Adding a wildcard symbol may retrieve word variants: (( 1979 agenda ii _ literatur oral ) or ( 2 benda ((ii y) or (ii 2)) literature author ))*.