Perhaps you should try some spelling variations:
filosofica da » filosofia da, filosofia de, filosofia di
items studie » stems studies, cems studies, dems studies
filosofia la » filosofia da, filosofia le, filosofia das
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 la) OR (filosofica da)) literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "test ((items studie) or (items die)) di ((filosofia la) OR (filosofica da)) literatura".
• Adding a wildcard symbol may retrieve word variants: test ((items studie) or (items die)) di ((filosofia la) OR (filosofica da)) literatura*.