Perhaps you should try some spelling variations:
a literatura » la literatura, a literature, y literatura
studien die » studie die, studien der
filosofia a » filosofia da, filosofia la, filosofia e
studien di » studien dd, studien der, studien bei
tests aue » tests auf, tests aus, tests acute

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 aue ((studien di) OR (studien die)) filosofia a literatura*".