Perhaps you should try some spelling variations:
optimization algorithmssss » optimization algorithms, optimisation algorithm
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
parameter estimation » parameter estimates, parameter optimization
write optimization » game optimization, qoe optimization, stage 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: (( write optimization algorithmssss ) OR ( parameter estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( write optimization algorithmssss ) or ( parameter estimation algorithms ))*.