Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
matter irrigation » water irrigation, matiere d'irrigation, managed irrigation
planning services » banking services
export matter » export patterns, export market, export maize
dam planning » term planning, from planning, land planning
import dam » import data, import tax, import ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( export matter irrigation schemes. ) or ( import dam planning services. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( export matter irrigation schemes. ) OR ( import dam planning services. )).
• Adding a wildcard symbol may retrieve word variants: (( export matter irrigation schemes. ) or ( import dam planning services. ))*.