Perhaps you should try some spelling variations:
istituiti sic » istituti di, istituti pii
storia antica » storia romantica, historia antiga, storia critica
storia gotica » storia politica, storia critica, storia emotiva
istituto di » instituto de, instituto ad
%contributo » %contributor, %contribute, %contributi

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: %contributo della%((istituto di) OR (istituiti sic)) ((((storia antica) OR (storia gotica))) OR (storia romanza))%22.
• Adding a wildcard symbol may retrieve word variants: %contributo della%((istituto di) or (istituiti sic)) ((((storia antica) or (storia gotica))) or (storia romanza))%22*.