Perhaps you should try some spelling variations:
internet services » internet service
irrigation scheme » irrigation systems
canal irrigation » scale irrigation
support canal » support can, support data, support bank
a internet » _ internet, 5 internet, 4 internet
support a » support _

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

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