Perhaps you should try some spelling variations:
duales studiumn » duale studium, dualen studium, duale studien
duales studium » das studium
y literatura » la literatura
e filologia » de filologia, di filologia, e fisiologia
filologia y » filologia e, filologica e, filosofia y
testo » test, tests, texto

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: testo ((duales studium) OR (duales studiumn)) e filologia y literatura.
• Adding a wildcard symbol may retrieve word variants: testo ((duales studium) or (duales studiumn)) e filologia y literatura*.