Perhaps you should try some spelling variations:
duale studien » duale studium, scale studien, duales studium
quito duale » quito durante
5 filosofia » e filosofia, y filosofia, _ filosofia
a filosofia » la filosofia, e filosofia, di filosofia
e literatur » die literatur

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: "quito duale studien ((5 filosofia) OR (a filosofia)) e literatur".
• Adding a wildcard symbol may retrieve word variants: quito duale studien ((5 filosofia) OR (a filosofia)) e literatur*.