Perhaps you should try some spelling variations:
"studi di saggi" » "studi de saggi", "studi di viaggi"
"studi de san" » "estudi de san", "studi del san", "studie de san", "studi de saint", "studi de sante"
"studi e saggi" » "studi _ 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 di saggi"))) OR ("studi de san")).
• Removing quotes may allow a broader search: (((( studi e saggi ) or ( studi di saggi ))) or ( studi de san )).
• Adding a wildcard symbol may retrieve word variants: (((("studi e saggi") or ("studi di saggi"))) or ("studi de san"))*.