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