Perhaps you should try some spelling variations:
derde istituzioni » delle istituzioni, nelle istituzioni, e istituzioni
storia ele » storia le, storia delle, storia alle
de derde » het derde
idee de » idee der, idee des, idee die

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: "((storia ele) OR (storia e)) idee de derde istituzioni (politiche" or politischer").
• Removing quotes may allow a broader search: ((storia ele) or (storia e)) idee de derde istituzioni (politiche or politischer ).
• Adding a wildcard symbol may retrieve word variants: "((storia ele) or (storia e)) idee de derde istituzioni (politiche" or politischer")*.