Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
innovation report » innovation support
spate irrigation » scale irrigation, water irrigation, surge irrigation
supply spate » supply system, supply side, supply water
supply case » supply cost, supply chain, supply curve

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((supply trade) OR (supply case)) innovation report. ) or ( supply spate irrigation schemes. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((supply trade) OR (supply case)) innovation report. ) OR ( supply spate irrigation schemes. )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((supply trade) OR (supply case)) innovation report. ) or ( supply spate irrigation schemes. ))".
• Adding a wildcard symbol may retrieve word variants: (( ((supply trade) OR (supply case)) innovation report. ) or ( supply spate irrigation schemes. ))*.