Perhaps you should try some spelling variations:
integration theories » integration theorems, integrationstheorie 2, integration theory
integration schemes » integration schengen, irrigation schemes, integration regimes
burke integration » market integration, europe integration, fare integration
deep integration » data integration
supply burke » supply curve, supply curves, supply europe
supply deep » support deep

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: (( supply burke integration schemes. ) OR ( supply deep integration theories. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply burke integration schemes. ) or ( supply deep integration theories. ))*.