Perhaps you should try some spelling variations:
"export trade integration schemes." » "export trade integration schengen.", "export trade irrigation schemes.", "export trade integration regimes.", "export taxes integration schemes.", "export base integration schemes.", "export tax integration schemes."
"supply main international cooperation." » "supply joint international cooperation.", "supply bonn international cooperation.", "supply nations international cooperation.", "supply chain international cooperation.", "supply ann international cooperation.", "supply many international cooperation."

You may be able to get more results by adjusting your search query.

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