Perhaps you should try some spelling variations:
spate irrigation » scale irrigation, water irrigation, surge irrigation
effort strategic » efforts strategies, reform strategic, export strategies
strategic action » strategic options, strategic allocation, strategic directions
support spate » support state, support stage, support system
action text » action test
systems. » system.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( support spate irrigation systems. ) OR ( effort strategic action text. ))~.
• Adding a wildcard symbol may retrieve word variants: (( support spate irrigation systems. ) or ( effort strategic action text. ))*.