Perhaps you should try some spelling variations:
del filosofia » de filosofia, della filosofia, e filosofia
allo studio » lo studio
filosofia a » filosofia da, filosofia la, filosofia e
studio del » estudio del, studio della, studio delle

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 OR test) allo studio del filosofia a literature*".