Perhaps you should try some spelling variations:
"supply china integration policies." » "supply china immigration policies.", "supply china international policies.", "supply china migration policies.", "supply china's integration policies.", "supply china integrating policies.", "supply chip integration policies.", "supply chains integration policies.", "supply chain integration policies."
"supply shadow importing countries." » "supply shadow exporting countries.", "supply shadow importing country.", "supply sharing importing countries.", "supply shadow exploring countries."

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

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