Perhaps you should try some spelling variations:
"supply chain integration theories." » "supply chain integration theorems.", "supply chain integrationstheorie 2.", "supply chain integration theory."
"Supply trade integration social." » "Supply trade international social."
supply trade » supply case

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 social.") OR ("supply chain integration theories."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Supply trade integration social.\") OR (\"supply chain integration theories.\"))".
• Removing quotes may allow a broader search: (( Supply trade integration social. ) OR ( supply chain integration theories. )).
• Adding a wildcard symbol may retrieve word variants: (("Supply trade integration social.") OR ("supply chain integration theories."))*.