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

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

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