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

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: (((("qoe optimization algorithms") OR ("_ optimization algorithm"))) OR ("_ optimized algorithm"))~.
• Removing quotes may allow a broader search: (((( qoe optimization algorithms ) or ( _ optimization algorithm ))) or ( _ optimized algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (((("qoe optimization algorithms") or ("_ optimization algorithm"))) or ("_ optimized algorithm"))*.