Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
requirements multi » requirements meet, requirements ultra, requirements martha
array sharing » arrays bearing, array imaging, way sharing
array string » arrays strings, array forming, array using
array strong » norway strong, stay strong, array along

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 multi dimensional ((((array string) or (array sharing))) or (array strong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation requirements multi dimensional ((((array string) OR (array sharing))) OR (array strong)).
• Adding a wildcard symbol may retrieve word variants: irrigation requirements multi dimensional ((((array string) or (array sharing))) or (array strong))*.