Perhaps you should try some spelling variations:
optimisation algorithmss » optimisation algorithm, estimation algorithms, estimation algorithm
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
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 algorithms ) or ( _ optimisation algorithmss ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( qoe optimization algorithms ) OR ( _ optimisation algorithmss ))*.