Perhaps you should try some spelling variations:
international theories » international treaties, international series, international fisheries
policy international » policy interventions, policy intervention
greater irrigation » water irrigation, private irrigation, grain irrigation
irrigation schemes » irrigation scheme, irrigation systems
support greater » support create, support better, support center
support policy » support policies, import policy

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

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