Perhaps you should try some spelling variations:
"supply does immigration policies." » "supply does immigration policy.", "supply does migration policy.", "supply does migration policies.", "supply gross immigration policies.", "supply mass immigration policies.", "supply costs immigration policies.", "supply needs immigration policies.", "supply sides immigration policies."
"supply shallow integration series." » "supply shallow integration theories.", "supply shallow integrating services.", "supply shallow integration schemes."

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

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