Perhaps you should try some spelling variations:
contributi dalla » contributi alla, contributo della, contributo alla
historia antiga » historia antigua, historia antiqua, historia argentina
instituti di » istituti di, instituti _, instituti a
istituto di » instituto de, instituto ad

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: %contributi dalla%((istituto di) OR (instituti di)) historia antiga%22.
• Adding a wildcard symbol may retrieve word variants: %contributi dalla%((istituto di) or (instituti di)) historia antiga%22*.