Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
planning services » banking services
water irrigation » scale irrigation, canal irrigation, farm irrigation
export water » export matter, export after, export rates
import duty » import duties
import das » import data, import bans, import tax

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

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