Perhaps you should try some spelling variations:
"supply chain integration theories." » "supply chain integration theorems.", "supply chain integrationstheorie 2.", "supply chain integration theory."
"supply burke integration theories." » "supply burke integration theorems.", "supply burke integrationstheorie 2.", "supply burke integration theory.", "supply market integration theories.", "supply europe integration theories.", "supply fare integration theories.", "supply curve integration theories.", "supply curves 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 chain integration theories.") or ("supply burke integration theories."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integration theories.") OR ("supply burke integration theories.")).
• Removing quotes may allow a broader search: (( supply chain integration theories. ) or ( supply burke integration theories. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chain integration theories.") or ("supply burke integration theories."))*.