Perhaps you should try some spelling variations:
teoria della » storia della
storia del » historia del, storia della, storia e
die double » de double, line double, time double
die douze » de douze, des douze, die dose
politiche » politische, politischen, politischer

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 della) OR (storia del)) idee ((die douze) OR (die double)) istituzioni politiche.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((teoria della) or (storia del)) idee ((die douze) OR (die double)) istituzioni politiche".
• Adding a wildcard symbol may retrieve word variants: ((teoria della) or (storia del)) idee ((die douze) OR (die double)) istituzioni politiche*.