Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
requirements vs » requirements v, requirements via, requirements _
vs dimensional » _ dimensional, 3 dimensional, 2 dimensional
array imaging » arrays imaging, airway imaging, ray imaging
array string » arrays strings, array sharing, array forming
array strong » array sharing, norway strong, stay strong

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 vs dimensional ((((array string) OR (array strong))) or (array imaging))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation requirements vs dimensional ((((array string) OR (array strong))) OR (array imaging)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "irrigation requirements vs dimensional ((((array string) OR (array strong))) or (array imaging))".
• Adding a wildcard symbol may retrieve word variants: irrigation requirements vs dimensional ((((array string) OR (array strong))) or (array imaging))*.