Potser podríeu intentar variants ortogràfiques:
nutrition requirements » nutritional requirements, nutrient requirements
requirements course » requirements sources, requirements case, requirements nurses
course divisions » court decisions, course designs, forest divisions
array imaging » arrays imaging, airway imaging, ray imaging
array along » arrays long, array arcing, array paving
arrays ang » arrays a

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• Si vols fer servir operadors booleans, han d'estar en majúscules: nutrition requirements course divisions ((((array along) OR (arrays ang))) OR (array imaging))~.
• Afegint truncament pot recuperar més registres: nutrition requirements course divisions ((((array along) or (arrays ang))) or (array imaging))*.