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

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( qoe optimisation algorithmss ) OR ( parameters optimisation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( qoe optimisation algorithmss ) OR ( parameters optimisation algorithm ))*.