Perhaps you should try some spelling variations:
estimation algorithmss » estimation algorithms, estimation algorithm, optimization algorithms
passive estimation » pose estimation
objective solution » objective evolutionary, objective allocation
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
modified passive » modified adaptive

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