Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
requirements c.w » requirements can, requirements ch, requirements case
c.w divisions » new divisions, cell divisions, _ divisions
array arcing » array forming, array probing, array sharing
array paving » array planning, array imaging, array probing
arrays load » arrays brad

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: irrigation requirements c.w divisions ((((array arcing) OR (arrays load))) OR (array paving))~.
• Adding a wildcard symbol may retrieve word variants: irrigation requirements c.w divisions ((((array arcing) or (arrays load))) or (array paving))*.