Perhaps you should try some spelling variations:
"supply european integration theories." » "supply european integration theorems.", "supply european integrationstheorie 2.", "supply european integration theory.", "supply europe integration theories.", "survey european integration theories."
"supply shock integration server." » "supply shock integration series.", "supply shock integration services.", "supply shock integration over.", "supply book integration server.", "supply look integration server.", "supply work integration server.", "supply shocks integration server."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply european integration theories.") or ("supply shock integration server."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply european integration theories.") OR ("supply shock integration server.")).
• Removing quotes may allow a broader search: (( supply european integration theories. ) or ( supply shock integration server. )).
• Adding a wildcard symbol may retrieve word variants: (("supply european integration theories.") or ("supply shock integration server."))*.