Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
integration series » integration theories, integrating services, integration schemes
water integration » water integrating, factor integration, data integration
spate irrigation » scale irrigation, water irrigation, surface irrigation
support water » support better, support what's, support worker
support spate » support state, support system, support staff

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

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