Perhaps you should try some spelling variations:
"supply chain integration schemes." » "supply chain integration schengen.", "supply chain irrigation schemes.", "supply chain integration regimes."
"Supply trade integration policy." » "Supply trade integration policies.", "Supply trade immigration policy.", "Supply trade international policy."
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 chain integration schemes.") OR ("Supply trade integration policy."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply chain integration schemes.\") OR (\"Supply trade integration policy.\"))*".
• Removing quotes may allow a broader search: (( supply chain integration schemes. ) OR ( Supply trade integration policy. ))*.