Perhaps you should try some spelling variations:
"supply mass immigration policy." » "supply mass migration policy.", "supply _ immigration policy.", "supply case immigration policy.", "supply main immigration policy.", "supply many immigration policy."
"supply scale integration power." » "supply care integration power.", "supply soziale integration power.", "supply trade integration power.", "supply scale integrative power.", "supply scale integration process.", "supply scale international power.", "supply case integration power.", "supply scheme integration power.", "supply social integration power."

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

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