Perhaps you should try some spelling variations:
classical sources » classical studies, classical spaces
classical schools » classical school, neoclassical schools, classic school
classical scheme » classical schemes, classic scheme, classical science
classical theme » classical themes, classical thermo, classical time
"classical code library" » "classical codes library", "classical case library", "classic code library", "classical core library", "classical tape 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) or (classical schools))) or (((classical theme) OR (classical scheme)))) library") OR ("classical code library")).
• Removing quotes may allow a broader search: (( ((((classical sources) or (classical schools))) or (((classical theme) OR (classical scheme)))) library ) or ( classical code library )).
• Adding a wildcard symbol may retrieve word variants: (("((((classical sources) or (classical schools))) or (((classical theme) OR (classical scheme)))) library") or ("classical code library"))*.