Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
asian integration » urban integration, american integration, spatial integration
irrigation system » irrigation systems, irrigation water, irrigation scheme
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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( supply asian integration efforts. ) OR ( supply case irrigation system. ))~".
• Adding a wildcard symbol may retrieve word variants: (( supply asian integration efforts. ) OR ( supply case irrigation system. ))*.