Perhaps you should try some spelling variations:
contributi dalla » contributi alla, contributo della, contributo alla
storia politica » historia politica, teoria politica, storia critica
storia antica » storia gotica, storia romantica, historia antiga
instituto de » institut der, institution der
istituto di » instituto ad

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: %contributi dalla%((instituto de) OR (istituto di)) ((storia antica) OR (storia politica))%22.
• Adding a wildcard symbol may retrieve word variants: %contributi dalla%((instituto de) or (istituto di)) ((storia antica) or (storia politica))%22*.