Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
irrigation scheme » irrigation systems
spate irrigation » scale irrigation, water irrigation, surge irrigation
supply spate » supply system, supply side, supply water
supply grid » supply crowd, supply great, support grid

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply spate irrigation scheme. ) or ( supply grid integration efforts. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply spate irrigation scheme. ) OR ( supply grid integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (( supply spate irrigation scheme. ) or ( supply grid integration efforts. ))*.