Perhaps you should try some spelling variations:
studio delle » studio della, estudio del
studi del » studio del, studi della, studio dell
studi de » estudi de, studie de, studio de
"studi e saggi" » "studi _ saggi", "studi di saggi", "studi de saggi"

Try widening your search to All Fields.

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 e saggi") OR ((("((studi de) or (((studi del) or (studio delle)))) saggi") OR ("((studi de) or (((studi del) or (studio delle)))) sang")))).
• Removing quotes may allow a broader search: (( studi e saggi ) or ((( ((studi de) or (((studi del) or (studio delle)))) saggi ) or ( ((studi de) or (((studi del) or (studio delle)))) sang )))).
• Adding a wildcard symbol may retrieve word variants: (("studi e saggi") or ((("((studi de) or (((studi del) or (studio delle)))) saggi") or ("((studi de) or (((studi del) or (studio delle)))) sang"))))*.