Perhaps you should try some spelling variations:
estimation algorithmssss » estimation algorithm
parameters estimation » parameter estimation, parameter estimates, parameter optimization
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
write estimation » risk estimation, pose estimation

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: (( parameters estimation algorithms ) OR ( write estimation algorithmssss ))~.
• Adding a wildcard symbol may retrieve word variants: (( parameters estimation algorithms ) or ( write estimation algorithmssss ))*.