Perhaps you should try some spelling variations:
"supply anti immigration policies." » "supply anti immigration policy.", "supply anti migration policy.", "supply net immigration policies.", "supply _ immigration policies.", "supply mass immigration policies."
"supply facto integration policies." » "supply facto international policies.", "supply facto migration policies.", "supply facto innovation policies.", "supply factor integration policies.", "supply faculty integration policies.", "supply sector integration policies.", "supply factors integration policies.", "supply data integration 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 anti immigration policies.") or ("supply facto integration policies."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply anti immigration policies.") OR ("supply facto integration policies.")).
• Removing quotes may allow a broader search: (( supply anti immigration policies. ) or ( supply facto integration policies. )).
• Adding a wildcard symbol may retrieve word variants: (("supply anti immigration policies.") or ("supply facto integration policies."))*.