Perhaps you should try some spelling variations:
con literatura » omni literatura, pena literatura, la literatura
during studie » during studies, during study, during soldier
tests during » costs during, protests during, testing during
di filosofia » la filosofia
e filosofia » la filosofia

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: "tests during studie ((di filosofia) OR (e filosofia)) con literatura".
• Adding a wildcard symbol may retrieve word variants: tests during studie ((di filosofia) OR (e filosofia)) con literatura*.