Perhaps you should try some spelling variations:
le literatura » la literatura, de literatura, e literatura
filosofia le » filosofia de, filosofia e, filosofia del
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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((test dem) OR (test der)) studium d filosofia le literatura".
• Adding a wildcard symbol may retrieve word variants: ((test dem) OR (test der)) studium d filosofia le literatura*.