Perhaps you should try some spelling variations:
contributo allo » contributo alla, contribute all, contributi alla
storia politica » historia politica, teoria politica, storia critica
storia gotica » storia antica, storia critica, storia emotiva
istituto di » instituto de, instituto ad
istituti di » instituti di, istituti pii, istituiti sic

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 allo%((istituto di) OR (istituti di)) ((storia gotica) OR (storia politica))%22.
• Adding a wildcard symbol may retrieve word variants: %contributo allo%((istituto di) or (istituti di)) ((storia gotica) or (storia politica))%22*.