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