Perhaps you should try some spelling variations:
classical schemes » classical scheme, classical themes, classical sciences
classical schools » classical school, neoclassical schools, classic school
"classical core library" » "classical codes library", "classical case library", "classical charge 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 schemes) or (classical schools)) library") OR ("classical core library")).
• Removing quotes may allow a broader search: (( ((classical schemes) or (classical schools)) library ) or ( classical core library )).
• Adding a wildcard symbol may retrieve word variants: (("((classical schemes) or (classical schools)) library") or ("classical core library"))*.