Perhaps you should try some spelling variations:
de litterature » la litterature, et litterature
de literatura » la literatura, y literatura, a literatura
tests female » agents female, versus female, heirs female
di filosofia » la filosofia, e filosofia
students di » students dit, students do, students d

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 female students di filosofia ((de literatura) OR (de litterature))*".