Perhaps you should try some spelling variations:
integration schemes » irrigation schemes, integration some, integration theories
facto integration » factor integration, faculty integration, sector integration
canal irrigation » scale irrigation
support canal » support data, support bank
supply facto » supply factors, supply sector, supply data
systems. » system.

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 systems. ) or ( supply facto integration schemes. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support canal irrigation systems. ) OR ( supply facto integration schemes. )).
• Adding a wildcard symbol may retrieve word variants: (( support canal irrigation systems. ) or ( supply facto integration schemes. ))*.