Perhaps you should try some spelling variations:
parameters estimation » parameter estimation, parameter estimates, parameter optimization
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
game optimisation » game optimization, stage optimization, qoe optimization
_ optimisation » _ 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: (( parameters estimation algorithms ) OR ( ((game optimisation) OR (_ optimisation)) algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( parameters estimation algorithms ) or ( ((game optimisation) OR (_ optimisation)) algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( parameters estimation algorithms ) or ( ((game optimisation) OR (_ optimisation)) algorithm ))*.