Perhaps you should try some spelling variations:
casa zaccaria » paola zaccaria, a zaccaria
convegno del » convegno della, convegno di, convegno per
succint desa » succinct des, succinto della, succinct data
succint des » succinct des, succincte des, succinct de
i convegno » di convegno, iv convegno, vi convegno
del casa » del caso, della casa, del casato

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 convegno del casa zaccaria / ((succint desa) OR (succint des)) repubblica.
• Adding a wildcard symbol may retrieve word variants: i convegno del casa zaccaria / ((succint desa) or (succint des)) repubblica*.