Perhaps you should try some spelling variations:
"supply main migration policies." » "supply main immigration policies.", "supply main migration policy.", "supply main education policies.", "supply human migration policies.", "supply von migration policies.", "supply chain migration policies.", "supply ann migration policies.", "supply many migration policies."
"supply main international prices." » "supply joint international prices.", "supply bonn international prices.", "supply nations international prices.", "supply chain international prices.", "supply ann international prices.", "supply many international prices.", "supply main international price."

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

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