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