Perhaps you should try some spelling variations:
duales studium » das studium
duale studien » duale studium, scale studien, dualen studium
y literatura » la literatura
e filosofia » la filosofia
filosofia y » filosofia e, filosofia _, filosofia de
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 ((duale studien) OR (duales studium)) e filosofia y literatura.
• Adding a wildcard symbol may retrieve word variants: testo ((duale studien) or (duales studium)) e filosofia y literatura*.