Perhaps you should try some spelling variations:
classical sources » classical spaces
sources library » source library, resource library, sources linear
studies library » studies literary, studies libraries, itunes library
classical core » classical codes, classical case, classical charge
classical code » classical codes, classical case, classic code
core library » case library, core libraries, gene library
code library » case library, gene library

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 studies library ))) OR ((( classical core library ) OR ( classical code library )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( classical sources library ) or ( classical studies library ))) or ((( classical core library ) OR ( classical code library ))))".
• Adding a wildcard symbol may retrieve word variants: (((( classical sources library ) or ( classical studies library ))) or ((( classical core library ) OR ( classical code library ))))*.