Perhaps you should try some spelling variations:
"supply chains integration policies." » "supply chains immigration policies.", "supply chains international policies.", "supply chains migration policies.", "supply chain integration policies.", "supply china's integration policies.", "supply channel 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 chains integration policies.") or ("supply shadow importing countries."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chains integration policies.") OR ("supply shadow importing countries.")).
• Removing quotes may allow a broader search: (( supply chains integration policies. ) or ( supply shadow importing countries. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chains integration policies.") or ("supply shadow importing countries."))*.