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

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( qoe optimization algorithm ) or ( _ optimisation algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( qoe optimization algorithm ) OR ( _ optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (( qoe optimization algorithm ) or ( _ optimisation algorithm ))*.