Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
integration south » integration study, integration some, integration through
case integration » care integration, fare integration, can integration
supply canal » supply annual, supply rural
supply case » supply cost, supply chain, supply curve
supply data » supply water

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply case integration south. ) or ( ((supply canal) OR (supply data)) irrigation schemes. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply case integration south. ) OR ( ((supply canal) OR (supply data)) irrigation schemes. ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( supply case integration south. ) or ( ((supply canal) OR (supply data)) irrigation schemes. ))*".