Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
rapid information » road information, land information, based information
grid irrigation » grain irrigation, drip irrigation, gray irrigation
support grid » support agri, support grant, support group
survey rapid » survey based, survey round

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( support grid irrigation schemes. ) or ( survey rapid information theory. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support grid irrigation schemes. ) OR ( survey rapid information theory. )).
• Adding a wildcard symbol may retrieve word variants: (( support grid irrigation schemes. ) or ( survey rapid information theory. ))*.