Perhaps you should try some spelling variations:
"supply toward integrating countries." » "supply toward importing countries.", "supply toward immigration countries.", "supply toward integrating culture.", "supply toward integrated countries.", "supply towards integrated countries."
"supply chain immigration policies." » "supply chain immigration policy.", "supply chain migration policy.", "supply chain integration policies.", "supply mass immigration policies.", "supply anti immigration policies."

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 immigration policies.") or ("supply toward integrating countries."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain immigration policies.") OR ("supply toward integrating countries."))*.
• Removing quotes may allow a broader search: (( supply chain immigration policies. ) or ( supply toward integrating countries. ))*.