Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
irrigation system » irrigation systems, irrigation water, irrigation scheme
asia integration » asian integration, asia's integration, media integration
curve irrigation » surge irrigation, large irrigation, crop irrigation
supply asia » supply africa, supply china

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 asia integration efforts. ) OR ( supply curve irrigation system. ))~".
• Adding a wildcard symbol may retrieve word variants: (( supply asia integration efforts. ) OR ( supply curve irrigation system. ))*.