Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
planning services » banking services
ratio irrigation » water irrigation, basin irrigation, grain irrigation
data planning » dam planning, das planning, data explaining
import data » import duty

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

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