Perhaps you should try some spelling variations:
delle studien » duale studien, delphi studien, modell studien
der filosofia » de filosofia, e filosofia, di filosofia
le literatura » la literatura, e literatura, de litteratura
de literatura » de litterature, la literatura, y literatura
studien der » studie der, studien die, studenten der
tesi delle » testi delle, test delle, testi della

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: "tesi delle studien der filosofia ((le literatura) OR (de literatura))".
• Adding a wildcard symbol may retrieve word variants: tesi delle studien der filosofia ((le literatura) OR (de literatura))*.