Perhaps you should try some spelling variations:
"classical sources library" » "classical studies library", "classical spaces library", "classical source library", "classical resource library"
"classical core libraries" » "classical codes libraries", "classical case libraries", "classical charge libraries", "classical source libraries", "classical gene libraries", "classical entire libraries"

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: (("classical sources library") OR ("classical core libraries"))*.
• Removing quotes may allow a broader search: (( classical sources library ) or ( classical core libraries ))*.