Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
migrant interaction » migrant integration, migrants integration, immigrant integration
interaction series » interactions series, interaction studies, interaction terms
support migrant » support migrants, support grant, supporting migrants

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply chain integration efforts. ) or ( support migrant interaction series. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply chain integration efforts. ) OR ( support migrant interaction series. )).
• Adding a wildcard symbol may retrieve word variants: (( supply chain integration efforts. ) or ( support migrant interaction series. ))*.