Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
irrigation schemes » irrigation scheme, irrigation systems
day irrigation » gray irrigation, drip irrigation, farm irrigation
a integration » 3 integration, 2 integration, 4 integration
support a » support _

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( export day irrigation schemes. ) or ( support a integration efforts. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( export day irrigation schemes. ) OR ( support a integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (( export day irrigation schemes. ) or ( support a integration efforts. ))*.