Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
irrigation schemes » irrigation scheme, irrigation systems
asian integration » urban integration, american integration, spatial integration
case irrigation » scale irrigation, use irrigation, change irrigation
supply asian » supply asia, supply design, supply ann
supply case » supply cost, supply chain, supply curve

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 case irrigation schemes. ) OR ( supply asian integration efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply case irrigation schemes. ) or ( supply asian integration efforts. ))*.