Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
requirements cloud » requirements claus, requirements come, requirements beyond
cloud dimensional » low dimensional, four dimensional, scour dimensional
array imaging » arrays imaging, airway imaging, ray imaging
array string » array strong, arrays strings, array sharing
array arcing » array forming, array probing, array sharing

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

• Performing a fuzzy search may retrieve terms with similar spellings: irrigation requirements cloud dimensional ((((array string) or (array arcing))) or (array imaging))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation requirements cloud dimensional ((((array string) OR (array arcing))) OR (array imaging)).
• Adding a wildcard symbol may retrieve word variants: irrigation requirements cloud dimensional ((((array string) or (array arcing))) or (array imaging))*.