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

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

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