Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
duale studie » duale studien, duale studium, duales studium
a literatura » a literature, y literatura, a literatur
e filosofia » la filosofia
studie e » studie 2, studie _, studie 1
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 studie e filosofia ((a literatura) OR (la literatura)).
• Adding a wildcard symbol may retrieve word variants: testo duale studie e filosofia ((a literatura) or (la literatura))*.