Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
irrigation schemes » irrigation scheme, irrigation systems
furrow irrigation » farm irrigation, crop irrigation, flood irrigation
grid integration » trade integration, _ integration, data integration
support grid » support agri, support grant, support group

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