Perhaps you should try some spelling variations:
literatur author » literature author, literatur autor, literature authors
literature oral » literature moral, literatura oral, literature morals
2 literatur » 2 literature, 12 literatur
159 agenda » 1979 agenda, 1 agenda, 10 agenda
bamenda ii » agenda ii, amanda ii, benda ii
agenda iv » agenda i, agenda ii, agenda iii
2 bamenda » _ bamenda
iv a » iv _, i a, ii a
ii 2 » ii _, ii a, i 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 iv a literature oral ) OR ( 2 bamenda ii 2 literatur author ))*.