Perhaps you should try some spelling variations:
iso literatur » vivo literatur, o literatur, risiko literatur
literatur a3 » literatur a1, literatur am, literatur als
1 literatur » 11 literatur, 1 literature
bamenda ii » amanda ii, benda ii
agenda ii » agenda iii, agenda i, agenda iv

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 ((bamenda ii) OR (agenda ii)) 1 literatur a ) OR ( 6 ((bamenda ii) OR (agenda ii)) iso literatur a3 )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( 159 ((bamenda ii) OR (agenda ii)) 1 literatur a ) or ( 6 ((bamenda ii) OR (agenda ii)) iso literatur a3 ))".
• Adding a wildcard symbol may retrieve word variants: (( 159 ((bamenda ii) OR (agenda ii)) 1 literatur a ) or ( 6 ((bamenda ii) OR (agenda ii)) iso literatur a3 ))*.