Perhaps you should try some spelling variations:
le literatura » la literatura, de literatura, e literatura
filosofia le » filosofia de, filosofia e, filosofia del
testo scale » tests scale, meso scale, best scale
studien e » studien es, studien _, studien 4
studien 3 » studien _, studien 4, studien 5

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 scale ((studien e) OR (studien 3)) filosofia le literatura".
• Adding a wildcard symbol may retrieve word variants: testo scale ((studien e) OR (studien 3)) filosofia le literatura*.