Perhaps you should try some spelling variations:
duale studien » duale studium, scale studien, duales studium
a literatura » la literatura, a literature, y literatura
quito duale » quito durante
5 filosofia » e filosofia, a filosofia, _ filosofia
y filosofia » e filosofia, a filosofia, la 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: "quito duale studien ((5 filosofia) OR (y filosofia)) a literatura*".