Perhaps you should try some spelling variations:
integration theories » integration theorems, integrationstheorie 2, integration theory
integration social » international social
taxes integration » spaces integration, values integration, res integration
agri integration » grid integration, der integration, iii integration
support agri » support grid, support aging, support a
import taxes » export taxes

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

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