Perhaps you should try some spelling variations:
de republica » la republica, _ republican, a republican
e republica » en republica, e republicas, ex republica
i convegni » di convegni, dei convegni, di convegno
della sala » della sua, della casa
della seta » della pieta, della sua, della societa

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: i convegni ((della sala) OR (della seta)) zuccari / succinto ((e republica) OR (de republica)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "i convegni ((della sala) or (della seta)) zuccari / succinto ((e republica) OR (de republica))".
• Adding a wildcard symbol may retrieve word variants: i convegni ((della sala) or (della seta)) zuccari / succinto ((e republica) OR (de republica))*.