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

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