Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
irrigation schemes » irrigation scheme, irrigation systems
crowd integration » grid integration, trade integration, chain integration
crowd irrigation » crop irrigation, flood irrigation, from irrigation
supply crowd » supply growth, supply cost, supply how

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