Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
invasive estimation » invasive ventilation
objective solution » objective evolutionary, objective allocation
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
modified invasive » modified passive

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 invasive estimation algorithms ) OR ( modified objective solution algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( modified invasive estimation algorithms ) OR ( modified objective solution algorithm ))*.