Perhaps you should try some spelling variations:
filosofia de » filosofia del
de literatur » de literatura, de literatuur, de litterature
estudio del » estudio de, estudios de
studio der » studio del, studio dei, estudio de
tesi » test, teso, temi

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: "tesi allo ((studio der) OR (estudio del)) filosofia de literatur*".