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