Perhaps you should try some spelling variations:
"classical sources library" » "classical studies library", "classical spaces library", "classical source library", "classical resource library", "classical sources linear"
"classical codes library" » "classical cases library", "classical geodesy library", "classical closed library", "classical code library", "classical models library"
"classical core library" » "classical charge library", "classical closed library", "classical convex library", "classical code library", "classical core libraries", "classical gene library"
"classical case library" » "classical chaos library", "classical chinese library"

You may be able to get more results by adjusting your search query.

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