Perhaps you should try some spelling variations:
le literatura » la literatura, de literatura, e literatura
filosofia le » filosofia de, filosofia e, filosofia del
studium e » studium _, studium 3, studium 8
studium 1 » studium _, studium 3, studium 8
test dem » test der, test des, test de

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 ((studium e) OR (studium 1)) filosofia le literatura.
• Adding a wildcard symbol may retrieve word variants: test dem ((studium e) or (studium 1)) filosofia le literatura*.