Perhaps you should try some spelling variations:
classical fourier » classical fluids
classical forms » classical first, classical free, classical fields
"classical core library" » "classical codes library", "classical moore library", "classical case library", "classical code library", "classical core libraries"

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 forms) OR (classical fourier)) library") OR ("classical core library")).
• Removing quotes may allow a broader search: (( ((classical forms) OR (classical fourier)) library ) or ( classical core library )).
• Adding a wildcard symbol may retrieve word variants: (("((classical forms) OR (classical fourier)) library") or ("classical core library"))*.