Perhaps you should try some spelling variations:
del literatura » de literatura, pela literatura, da literatura
table student » male student, enable students, mobile student
tests table » test tables, results table, test suitable
a filosofia » la filosofia, di 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 table student ((a filosofia) OR (e filosofia)) del literatura".
• Adding a wildcard symbol may retrieve word variants: tests table student ((a filosofia) OR (e filosofia)) del literatura*.