Perhaps you should try some spelling variations:
"supply chain international cooperation." » "supply chains international cooperation.", "supply main international cooperation.", "supply can international cooperation."
"import trade integration schemes." » "import trade integration schengen.", "import trade irrigation schemes.", "import trade integration regimes.", "export trade integration schemes.", "import price integration schemes.", "import taxes integration schemes."

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 international cooperation.") or ("import trade integration schemes."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain international cooperation.") OR ("import trade integration schemes.")).
• Removing quotes may allow a broader search: (( supply chain international cooperation. ) or ( import trade integration schemes. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chain international cooperation.") or ("import trade integration schemes."))*.