Perhaps you should try some spelling variations:
integration social » international social
irrigation schemes » 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 grid integration social. ) or ( supply spate irrigation schemes. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply grid integration social. ) OR ( supply spate irrigation schemes. )).
• Adding a wildcard symbol may retrieve word variants: (( supply grid integration social. ) or ( supply spate irrigation schemes. ))*.