Perhaps you should try some spelling variations:
optimized algorithmsssss » optimized algorithms, optimized algorithm, optimizer algorithms
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
parameter estimation » parameter estimates, parameter optimization
parameter optimized » parameter optimization

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: (( parameter estimation algorithms ) OR ( parameter optimized algorithmsssss ))~.
• Adding a wildcard symbol may retrieve word variants: (( parameter estimation algorithms ) or ( parameter optimized algorithmsssss ))*.