Perhaps you should try some spelling variations:
integration social » international social
migration policies » immigration policies, migration policy, education policies
shock integration » book integration, look integration, work integration
burke migration » worker migration, europe migration, pre migration
supply shock » supply shocks
supply burke » supply curve, supply curves, supply europe

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 social. ) or ( supply burke migration policies. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply shock integration social. ) OR ( supply burke migration policies. )).
• Adding a wildcard symbol may retrieve word variants: (( supply shock integration social. ) or ( supply burke migration policies. ))*.