Perhaps you should try some spelling variations:
"supply trade integration theories." » "supply trade integration theorems.", "supply trade integrationstheorie 2.", "supply trade integration theory.", "supply case integration theories."
"supply crowd integration efforts." » "supply crowd international efforts.", "supply crowd conservation efforts.", "supply grid integration efforts.", "supply rfid integration efforts.", "supply beyond integration efforts.", "supply growth integration efforts.", "supply cost integration efforts.", "supply from integration efforts."

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

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