Perhaps you should try some spelling variations:
del literatura » de literatura, pela literatura, da literatura
d filosofia » di filosofia, de filosofia, da filosofia
studium d » studium ad, studium _, studium 1
test dem » test des, test de, nebst dem

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: ((test dem) OR (test der)) studium d filosofia del literatura.
• Adding a wildcard symbol may retrieve word variants: ((test dem) or (test der)) studium d filosofia del literatura*.