Perhaps you should try some spelling variations:
ventilation algorithm » estimation algorithm, estimation algorithms, evolution algorithm
passive ventilation » adaptive ventilation, invasive ventilation
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
modified passive » modified adaptive
modified aging » modified caging
aging solution » saline solution

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• Performing a fuzzy search may retrieve terms with similar spellings: (( modified passive ventilation algorithm ) OR ( modified aging solution algorithm ))~.
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