Perhaps you should try some spelling variations:
des filosofia » de filosofia, e filosofia, di filosofia
da literatura » la literatura, a literatura, de literatura
filosofia da » filosofia de, filosofia del, filosofia e
studium des » studium der
test duale » test double, test orale, test doubles
test delle » testi delle, tesi delle, test della

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((test duale) OR (test delle)) studium des filosofia da literatura*.