Perhaps you should try some spelling variations:
delle studies » delay studies, delhi studies, decline studies
de literatura » de litterature, la literatura, y literatura
da filosofia » la filosofia, di filosofia, a filosofia
tesi delle » testi delle, test delle, testi della
studies da » studies dna, studies das, studies dan

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: tesi delle studies da filosofia ((de literatura) OR (a literature)).
• Adding a wildcard symbol may retrieve word variants: tesi delle studies da filosofia ((de literatura) or (a literature))*.