Perhaps you should try some spelling variations:
"supply mass immigration policies." » "supply mass immigration policy.", "supply mass migration policy.", "supply mass migration policies.", "supply _ immigration policies.", "supply case immigration policies.", "supply main immigration policies.", "supply many immigration policies."
"supply japan international prices." » "supply japan's international prices.", "supply main international prices.", "supply lavalin international prices.", "supply data international prices.", "supply gap international prices.", "supply ann international prices.", "supply japan international price."

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 mass immigration policies.") or ("supply japan international prices."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply mass immigration policies.") OR ("supply japan international prices.")).
• Removing quotes may allow a broader search: (( supply mass immigration policies. ) or ( supply japan international prices. )).
• Adding a wildcard symbol may retrieve word variants: (("supply mass immigration policies.") or ("supply japan international prices."))*.