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
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

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 (instituto de))) OR (((istituti di) OR (instituti di)))) ((storia gotica) OR (storia politica))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%contributo allo%((((istituto di) OR (instituto de))) or (((istituti di) or (instituti di)))) ((storia gotica) or (storia politica))%22".
• Adding a wildcard symbol may retrieve word variants: %contributo allo%((((istituto di) OR (instituto de))) or (((istituti di) or (instituti di)))) ((storia gotica) or (storia politica))%22*.