Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
internet services » internet service
canal irrigation » scale irrigation
support canal » support can, support data, support bank
fare internet » pre internet, fur internet, future internet
support fare » support farm, support farmers, support future

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

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