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