Perhaps you should try some spelling variations:
di convegno » del convegno
della sala » della casa, della seta
senato la » sento la, senat la, senato de
senator a » senator _, senatore _
republica » republican, republic, republics

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: di convegno ((della sala) OR (della sua)) zuccari / ((senato la) OR (((senator a) OR (senators _)))) republica.
• The words AND, OR and NOT may confuse the search; try adding quotes: "di convegno ((della sala) OR (della sua)) zuccari / ((senato la) or (((senator a) or (senators _)))) republica".
• Adding a wildcard symbol may retrieve word variants: di convegno ((della sala) OR (della sua)) zuccari / ((senato la) or (((senator a) or (senators _)))) republica*.