Perhaps you should try some spelling variations:
duale studien » duale studium, scale studien, duales studium
a literatura » la literatura, y literatura, a literatur
quito duale » quito durante
5 filosofia » e filosofia, a filosofia, y filosofia
studien 5 » studien _, studien 3, studien 4

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 ((a literatura) OR (a literature))*".