Perhaps you should try some spelling variations:
"supply gap international political." » "supply gap international policy.", "supply eaap international political.", "supply up international political.", "supply crop international political.", "supply a international political."
"supply male immigration policies." » "supply male immigration policy.", "supply male migration policy.", "supply scale immigration policies.", "supply mass immigration policies.", "supply male migration policies.", "supply case immigration policies.", "supply main immigration policies.", "supply many immigration policies."

Try widening your search to All Fields.

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

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