Perhaps you should try some spelling variations:
nutrient requirements » nutritional requirements
requirements mono » requirements among, requirements model, requirements can
mono dimensional » one dimensional, two dimensional, low dimensional
array strings » arrays strings, array sharing
array string » arrays strings, array sharing, array forming
array strong » array sharing, norway strong, stay strong

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