Perhaps you should try some spelling variations:
"classical sources library" » "classical studies library", "classical spaces library", "classic sources library", "classical forces library", "classical resourcess library", "classical source library", "classical resource library"
"classical source libraries" » "classic source libraries", "classical force libraries", "classical resources libraries", "classical church libraries"
"classic sources library" » "classic source library", "classic resource library", "classic studies library", "classes sources library", "class sources library"
"classical core library" » "classical codes library", "classical case library", "classical charge library", "classical code library", "classical core libraries"

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: (((((("classical sources library") OR ("classic sources library"))) OR ("classical source libraries"))) OR ("classical core library")).
• Removing quotes may allow a broader search: (((((( classical sources library ) or ( classic sources library ))) or ( classical source libraries ))) or ( classical core library )).
• Adding a wildcard symbol may retrieve word variants: (((((("classical sources library") or ("classic sources library"))) or ("classical source libraries"))) or ("classical core library"))*.