Perhaps you should try some spelling variations:
le literatura » la literatura, de literatura, e literatura
filosofia le » filosofia de, filosofia e, filosofia del
tests das » tests des, test das, tests data
studium d » studium ad, studium _, studium 3
studium 1 » studium _, studium 3, studium 8

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: "tests das ((studium d) OR (studium 1)) filosofia le literatura*".