Perhaps you should try some spelling variations:
storia romantica » storia romanza, storia politica, teoria semantica
storia antica » storia gotica, historia antiga, storia critica
instituto de » institut der, institution der
istituti pii » istituiti sic, istituto di, instituti di
istituti di » instituti di, istituto di, istituiti sic
%contributo » %contributor, %contribute, %contributi

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 (((istituti di) OR (istituti pii)))) ((storia antica) OR (storia romantica))%22.
• Adding a wildcard symbol may retrieve word variants: %contributo della%((instituto de) or (((istituti di) or (istituti pii)))) ((storia antica) or (storia romantica))%22*.