Perhaps you should try some spelling variations:
integration theories » integration theory, integration through, integration efforts
integration series » integrating services, integration schemes, integration social
global integration » regional integration
grant integration » migrant integration, trade integration, grid integration

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

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