Perhaps you should try some spelling variations:
international efforts » international airports, international energy, international airport
south international » some international, health international, states international
irrigation schemes » irrigation scheme, irrigation systems
canal irrigation » scale irrigation
supply canal » supply annual, supply rural, supply case
supply south » supply growth, supply costs, supply cost

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply canal irrigation schemes. ) OR ( supply south international efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply canal irrigation schemes. ) or ( supply south international efforts. ))*.