Perhaps you should try some spelling variations:
"supply scale immigration policies." » "supply scale immigration policy.", "supply scale migration policy.", "supply scale migration policies.", "supply scale irrigation policies.", "supply race immigration policies.", "supply case immigration policies.", "supply scheme immigration policies.", "supply social immigration policies."
"support grant integration series." » "support grant integration theories.", "support grant integrating services.", "support grant integration schemes.", "support migrant integration series.", "support trade integration series.", "support grid integration series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply scale immigration policies.") or ("support grant integration series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply scale immigration policies.") OR ("support grant integration series."))*.
• Removing quotes may allow a broader search: (( supply scale immigration policies. ) or ( support grant integration series. ))*.