Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
irrigation schemes » irrigation scheme, irrigation systems
grain irrigation » gray irrigation, gravity irrigation, drip irrigation
support trade » support trainer, export trade, import trade
support grain » support grant, support grid, support trainer

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

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