Perhaps you should try some spelling variations:
"supply chain integration theories." » "supply chain integration theory.", "supply chain integration through.", "supply chain integration efforts.", "supply trade integration theories.", "supply data integration theories.", "supply grid integration theories."
"supply fare integration theories." » "supply fare integration theory.", "supply fare integration through.", "supply fare integration efforts.", "supply market integration theories.", "supply trade integration theories.", "supply data integration theories.", "supply farm integration theories.", "supply case 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 fare integration theories."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply chain integration theories.\") OR (\"supply fare integration theories.\"))".
• Removing quotes may allow a broader search: (( supply chain integration theories. ) OR ( supply fare integration theories. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chain integration theories.") OR ("supply fare integration theories."))*.