Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
network estimation » network optimization
modified passive » modified adaptive
passive solution » positive solutions, saline solution
verified network » certified network, defined network

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 passive solution algorithm ) OR ( verified network estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified passive solution algorithm ) or ( verified network estimation algorithms ))*.