Perhaps you should try some spelling variations:
nutritional requirement » nutritional requirements, nutrition requirements, functional requirements
requirement three » requirements free, requirement through, requirements thorny
three dimensions » three dimensional
arrays string » arrays strings, arrays sorting, arrays swarming
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: nutritional requirement three dimensions ((arrays string) or (((array string) or (array strong))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nutritional requirement three dimensions ((arrays string) OR (((array string) OR (array strong)))).
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