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