Perhaps you should try some spelling variations:
ventilation algorithm » estimation algorithms, evolution algorithm
passive ventilation » adaptive ventilation, invasive ventilation
market estimation » market optimization, parameter estimation
modified passive » modified adaptive
modified market » modified male

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified market estimation algorithm ) or ( modified passive ventilation algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified market estimation algorithm ) OR ( modified passive ventilation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (( modified market estimation algorithm ) or ( modified passive ventilation algorithm ))*.