Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
rural irrigation » canal irrigation, local irrigation, total irrigation
can integration » chain integration, care integration, urban integration
supply rural » supply curve
export can » export ban, export bans, export plan
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 rural irrigation systems. ) or ( export can integration efforts. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply rural irrigation systems. ) OR ( export can integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (( supply rural irrigation systems. ) or ( export can integration efforts. ))*.