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

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( modified passive ventilation algorithm ) OR ( modified aging solution algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( modified passive ventilation algorithm ) OR ( modified aging solution algorithm ))*.