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 fare integration theories." » "supply fare integration theorems.", "supply fare integrationstheorie 2.", "supply fare integration theory.", "supply die integration theories.", "supply farm integration theories.", "supply case integration theories.", "supply figure integration theories."

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