Perhaps you should try some spelling variations:
delle studien » duale studien, delphi studien, modell studien
de filosofia » e filosofia, di filosofia, la filosofia
e literatura » de literatura, y literatura, e literatur
filosofia e » filosofia de, filosofia del
test delle » testi delle, tesi delle, test della
studien de » studien der, studien die, studien des

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

• Adding a wildcard symbol may retrieve word variants: test delle studien de filosofia e literatura*.