Perhaps you should try some spelling variations:
der filosofia » de filosofia, e filosofia, di filosofia
a literatura » la literatura, a literature, y literatura
filosofia a » filosofia da, filosofia la, filosofia e
testo das » test das, testen das, test dast
tests das » tests des, test das, tests data

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: "((testo das) OR (tests das)) studium der filosofia a literatura".
• Adding a wildcard symbol may retrieve word variants: ((testo das) OR (tests das)) studium der filosofia a literatura*.