Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
irrigation schemes » irrigation scheme, irrigation systems
canal irrigation » scale irrigation
can integration » chain integration, von integration, urban integration
support canal » support data, support bank, support chuan
support can » support chuan, support bank, support a

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