Perhaps you should try some spelling variations:
integration theories » integration theory, integration through, integration efforts
chain integration » trade integration, data integration, grid integration
irrigation scheme » irrigation systems
can irrigation » canal irrigation, change irrigation, scale irrigation
supply can » supply case, supply a, supply gap

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