Perhaps you should try some spelling variations:
integration theories » integration theorems, integrationstheorie 2, integration theory
integration social » international social
agri integration » grid integration, der integration, iii integration
res integration » dis integration, 1.2 integration, process integration
support agri » support grid, support aging, support a
import res » import rates, import rules, import prices

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

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