Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
filosofia de » filosofia del
studies lit » studies list, studies lia, studies light
test scale » tests scale, best scale, rest scale
studies li » studies lia, studies l2, studies ld

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: "test scale ((studies li) OR (studies lit)) filosofia de literatura*".