Perhaps you should try some spelling variations:
des filosofica » de filosofia, e filosofica, e filosofia
filosofica de » filosoficas de, filosofia de, filosofica da
de literatura » de litterature, la literatura, y literatura
studium des » studium der
des das » des dass, des dab, des dac

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: des das studium des filosofica de literatura*.