Perhaps you should try some spelling variations:
"bibliothecae mediceae" » "bibliothecae selectae", "bibliotheca indica", "bibliotheca meadiana"
"biblioteca americana" » "bibliotheca americana", "biblioteca ambrosiana", "biblia americana"
"biblioteca medicea" » "bibliotheca meadiana", "bibliotheca indica", "bibliotheca americana"

Try widening your search to All Fields.

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: (((("biblioteca medicea") OR ("biblioteca americana"))) OR ((("bibliothecae mediceae") OR ("bibliothecae regiae")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"biblioteca medicea\") OR (\"biblioteca americana\"))) or (((\"bibliothecae mediceae\") or (\"bibliothecae regiae\"))))".
• Removing quotes may allow a broader search: (((( biblioteca medicea ) OR ( biblioteca americana ))) or ((( bibliothecae mediceae ) or ( bibliothecae regiae )))).
• Adding a wildcard symbol may retrieve word variants: (((("biblioteca medicea") OR ("biblioteca americana"))) or ((("bibliothecae mediceae") or ("bibliothecae regiae"))))*.