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 resource library", "classical series library"
"classical source library" » "classic source library", "classical force library", "classical resources library", "classical source libraries"
"classical core library" » "classical codes library", "classical case library", "classical charge library", "classical core libraries", "classical gene library"
"classical code library" » "classical codes library", "classical case library", "classic code library", "classical tape library", "classical gene library"

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 ("classical source library"))) OR ((("classical core library") OR ("classical code library")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"classical sources library\") OR (\"classical source library\"))) or (((\"classical core library\") or (\"classical code library\"))))".
• Removing quotes may allow a broader search: (((( classical sources library ) OR ( classical source library ))) or ((( classical core library ) or ( classical code library )))).
• Adding a wildcard symbol may retrieve word variants: (((("classical sources library") OR ("classical source library"))) or ((("classical core library") or ("classical code library"))))*.