Perhaps you should try some spelling variations:
heros moderne » versus moderne, der moderne, reis moderne
rosi moderne » modi moderner, ii moderne, i moderne
e literatura » de literatura, e literatur, a literatura
y literatura » la literatura
e filosofia » la filosofia
studien e » studien es, studien _, studien 3

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: ((rosi moderne) OR (heros moderne)) studien e filosofia ((e literatura) OR (y literatura)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((rosi moderne) or (heros moderne)) studien e filosofia ((e literatura) OR (y literatura))".
• Adding a wildcard symbol may retrieve word variants: ((rosi moderne) or (heros moderne)) studien e filosofia ((e literatura) OR (y literatura))*.