Perhaps you should try some spelling variations:
na literatura » la literatura, a literatura, a literature
filosofia na » filosofia da, filosofia la, filosofia n
studium die » studium der, studium des
studium di » studium i, studium ii, studium d

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: "text der ((studium di) OR (studium die)) filosofia na literatura*".