Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
great integration » et integration, test integration, text integration
canal irrigation » scale irrigation
supply canal » supply canada, supply annual, supply china
supply great » supply growth, supply gap, supply gas
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: (( supply canal irrigation systems. ) or ( supply great integration efforts. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply canal irrigation systems. ) OR ( supply great integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (( supply canal irrigation systems. ) or ( supply great integration efforts. ))*.