Perhaps you should try some spelling variations:
ventilation algorithms » estimation algorithms, estimation algorithm, convolution algorithms
adaptive ventilation » adaptive quantization, invasive ventilation
optimized algorithm » optimized algorithms, optimizer algorithms
modified adaptive » modified passive
modified near » modified seird, modified adam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified adaptive ventilation algorithms ) OR ( modified near optimized algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified adaptive ventilation algorithms ) or ( modified near optimized algorithm ))*.