Perhaps you should try some spelling variations:
"supply chain integration schemes." » "supply chain irrigation schemes.", "supply chain integration some.", "supply chain integration theories.", "supply trade integration schemes.", "supply data integration schemes.", "supply grid integration schemes."
"supply chain integration theory." » "supply chain integration through.", "supply chain information theory.", "supply chain integration report.", "supply trade integration theory.", "supply data integration theory.", "supply grid integration theory."

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 schemes.") OR ("supply chain integration theory."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply chain integration schemes.\") OR (\"supply chain integration theory.\"))*".
• Removing quotes may allow a broader search: (( supply chain integration schemes. ) OR ( supply chain integration theory. ))*.