Perhaps you should try some spelling variations:
estudi de » estudio de, estudis de, estudo de
di saggi » di viaggi, e saggi
de saggi » e saggi, de santi, de sang
studi » studie, study
estudi » estudie, estudy

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( studi di saggi ) OR ( estudi de saggi )).
• Adding a wildcard symbol may retrieve word variants: (( studi di saggi ) or ( estudi de saggi ))*.