Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
migration policy » education policy
how integration » power integration, tool integration, _ integration
male migration » female migration, mass migration, a migration
supply male » supply case, supply role, supply market
supply how » supply shock

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply how integration efforts. ) or ( supply male migration policy. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply how integration efforts. ) OR ( supply male migration policy. ))*.