Perhaps you should try some spelling variations:
le literature » e literature, 2e literature, ce literature
filosofia le » filosofia de, filosofia e, filosofia del
test furs » test fur, test first, test forms
studium 3 » studium _, studium 8, studium im
studium 1 » studium _, studium 8, studium im

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 furs ((studium 3) OR (studium 1)) filosofia le literature.
• Adding a wildcard symbol may retrieve word variants: test furs ((studium 3) or (studium 1)) filosofia le literature*.