Perhaps you should try some spelling variations:
duale studie » duale studien, duale studium, duales studium
a literatura » la literatura, a literature, y literatura
e filosofia » la filosofia
filosofia a » filosofia da, filosofia la, filosofia e
studie e » studie 2, studie _, studie 1

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: "(testo OR texto) duale studie e filosofia a literatura".
• Adding a wildcard symbol may retrieve word variants: (testo OR texto) duale studie e filosofia a literatura*.