Perhaps you should try some spelling variations:
"supply costs integration schemes." » "supply costs integration schengen.", "supply costs irrigation schemes.", "supply costs integration regimes.", "supply comes integration schemes.", "supply post integration schemes.", "supply focus integration schemes."
"supply child migration policies." » "supply child immigration policies.", "supply child migration policy.", "supply child education policies.", "supply failed migration policies.", "supply world migration policies.", "supply aid migration policies.", "supply china migration policies.", "supply cold migration policies.", "supply chains migration 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 child migration policies.") or ("supply costs integration schemes."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply child migration policies.") OR ("supply costs integration schemes.")).
• Removing quotes may allow a broader search: (( supply child migration policies. ) or ( supply costs integration schemes. )).
• Adding a wildcard symbol may retrieve word variants: (("supply child migration policies.") or ("supply costs integration schemes."))*.