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

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