Perhaps you should try some spelling variations:
international efforts » international airports, international energy, international airport
plants international » paths international, planning international, japan's international
canal irrigation » scale irrigation
support plants » support plans, support grant, support land
support canal » support can, support data, support bank
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: (( support canal irrigation systems. ) or ( support plants international efforts. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support canal irrigation systems. ) OR ( support plants international efforts. )).
• Adding a wildcard symbol may retrieve word variants: (( support canal irrigation systems. ) or ( support plants international efforts. ))*.