Perhaps you should try some spelling variations:
storia romantica » storia politica, teoria semantica, storia gotica
istituiti sic » istituti di, istituti pii
storia antica » storia gotica, historia antiga, storia critica
instituto de » institut der, institution der
%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%((instituto de) OR (istituiti sic)) ((((storia antica) OR (storia romantica))) OR (storia romanza))%22.
• Adding a wildcard symbol may retrieve word variants: %contributo della%((instituto de) or (istituiti sic)) ((((storia antica) or (storia romantica))) or (storia romanza))%22*.