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 sources linear"
"classical source library" » "classic source library", "classical force library", "classical resources library", "classical resource library", "classical source libraries"
"classical codes library" » "classical cases library", "classical geodesy library", "classical closed library", "classical code library", "classical models library"
"classical core library" » "classical case library", "classical charge library", "classical closed library", "classical code library", "classical core 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 source library"))) OR ((("classical core library") OR ("classical codes 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 codes library\"))))".
• Removing quotes may allow a broader search: (((( classical sources library ) OR ( classical source library ))) or ((( classical core library ) or ( classical codes library )))).
• Adding a wildcard symbol may retrieve word variants: (((("classical sources library") OR ("classical source library"))) or ((("classical core library") or ("classical codes library"))))*.