Perhaps you should try some spelling variations:
duale studie » duale studien, duale studium, duales studium
filologica e » filologici e, filosofica e, philologica de
tests duale » tests due, tests scale, tests damage
filologia e » fisiologia e, filologici e, filosofia e
studie die » studie der

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: "tests duale studie die ((filologia e) OR (filologica e)) literatura".
• Adding a wildcard symbol may retrieve word variants: tests duale studie die ((filologia e) OR (filologica e)) literatura*.