Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
shock integration » book integration, look integration, work integration
migration policy » education policy
race migration » race immigration, trade migration, male migration
supply shock » supply shocks
supply race » supply rates, supply reach, supply case

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

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