Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
optimized algorithms » optimized algorithm, optimizer algorithms, optimization algorithms
parameter optimized » parameter optimization
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 algorithm ) OR ( modified parameter optimized algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified qoe optimization algorithm ) or ( modified parameter optimized algorithms ))*.