Perhaps you should try some spelling variations:
optimization algorithmss » optimisation algorithm, estimation algorithms, estimation algorithm
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
qoe optimization » game optimization, _ optimization, stage optimization
parameter » parameters

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: (( qoe optimization algorithmss ) OR ( parameter optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( qoe optimization algorithmss ) or ( parameter optimization algorithms ))*.