Perhaps you should try some spelling variations:
delle studien » delphi studien, modell studien, die studien
duale studien » duale studium, scale studien, duales studium
la literatura » la litterature, a literature
filosofia la » filosofia da, filosofia le, filosofica da
5 filosofia » e filosofia, a filosofia, y filosofia

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) OR (duale studien)) 5 filosofia la literatura*".