Perhaps you should try some spelling variations:
le literatura » la literatura, de literatura, e literatura
di filosofia » la filosofia, e filosofia
items studie » stems studies, cems studies, dems studies
filosofia le » filosofia de, filosofia e, filosofia del
items die » items der, items des

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: test ((items studie) OR (items die)) di filosofia le literatura.
• Adding a wildcard symbol may retrieve word variants: test ((items studie) or (items die)) di filosofia le literatura*.