Perhaps you should try some spelling variations:
optimisation algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
parameter optimisation » parameter optimization, parameter estimation
qoe optimization » game optimization, _ optimization, stage optimization
modified qoe » modified male, modified _, modified bi1

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: (( modified qoe optimization algorithms ) OR ( modified parameter optimisation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified qoe optimization algorithms ) or ( modified parameter optimisation algorithms ))*.