Perhaps you should try some spelling variations:
francesco pentini » francesco valentini, francesco datini, francesco denti
francesco perrini » francesco perri, francesco veracini, francesco patrizi
francesco contini » francesco bottin, francesco colin, francesco datini

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: ((((francesco pentini) OR (francesco perrini))) OR (francesco contini)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((francesco pentini) OR (francesco perrini))) or (francesco contini))".
• Adding a wildcard symbol may retrieve word variants: ((((francesco pentini) OR (francesco perrini))) or (francesco contini))*.