Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
cote integration » care integration, content integration, power integration
canal irrigation » scale irrigation
supply canal » supply annual, supply rural, supply case
supply cote » supply costs, supply cost, supply case

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( supply cote integration study. ) OR ( supply canal irrigation schemes. ))~".
• Adding a wildcard symbol may retrieve word variants: (( supply cote integration study. ) OR ( supply canal irrigation schemes. ))*.