Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
bans irrigation » tank irrigation, canal irrigation, basin irrigation
asking service » banking service, making service, using service
import bans » import taxes
import data » import duty
data asking » data passing, data using, data taking

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( import bans irrigation schemes. ) or ( import data asking service. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( import bans irrigation schemes. ) OR ( import data asking service. ))*.