Perhaps you should try some spelling variations:
optimisation algorithmsss » optimization algorithms, estimation algorithms
parameter 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( parameter optimisation algorithmsss ) OR ( qoe optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( parameter optimisation algorithmsss ) or ( qoe optimisation algorithm ))*.