Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
group integration » group interaction, group interactions, erp integration
canal irrigation » scale irrigation
support group » support grant
supply canal » supply canada, supply annual, supply china
systems. » system.

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

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