Perhaps you should try some spelling variations:
integration theories » integration theory, integration through, integration efforts
integration social » international social
water integration » water integrating, factor integration, data integration
chain integration » trade integration, data integration, grid integration

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 water integration social. ) OR ( supply chain integration theories. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply water integration social. ) or ( supply chain integration theories. ))*.