Perhaps you should try some spelling variations:
delle studien » duale studien, delphi studien, modell studien
filosofia a » filosofia da, filosofia la, filosofia e
tesi delle » testi delle, test delle, testi della
studien la » studien lap, studien a, studien l

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

• Adding a wildcard symbol may retrieve word variants: tesi delle studien la filosofia a literature*.