Perhaps you should try some spelling variations:
delete istituzioni » delle istituzioni, nelle istituzioni, le istituzioni
teoria delle » teoria della, storia della, teoria de
storia del » historia del, storia della, storia e
3 delete » _ delete, a delete, 9 delete

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: "((teoria delle) OR (storia del)) idee 3 delete istituzioni (politiche" or politische").
• Removing quotes may allow a broader search: ((teoria delle) or (storia del)) idee 3 delete istituzioni (politiche or politische ).
• Adding a wildcard symbol may retrieve word variants: "((teoria delle) or (storia del)) idee 3 delete istituzioni (politiche" or politische")*.