Perhaps you should try some spelling variations:
internet services » internet service
irrigation scheme » irrigation systems
canal irrigation » scale irrigation
supply canal » supply annual, supply rural, supply case
wto internet » _ internet
supply wto » supply water

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

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