Perhaps you should try some spelling variations:
interaction series » interactions series, interaction studies, interaction terms
irrigation scheme » irrigation systems
spate irrigation » scale irrigation, water irrigation, surge irrigation
grid interaction » grid integration, grid interactive, graph interaction
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 interaction series. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply spate irrigation scheme. ) OR ( supply grid interaction series. ))*.