Perhaps you should try some spelling variations:
"_ optimization algorithms" » "_ optimisation algorithm", "_ estimation algorithms", "_ optimized algorithms"
"qoe optimized algorithm" » "qoe optimized algorithms", "qoe optimizer algorithms", "_ optimized algorithm"
"qoe estimation algorithm" » "pose estimation algorithm", "_ estimation algorithm", "cover estimations 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 estimation algorithm") OR ("qoe optimized algorithm"))) OR ("_ optimization algorithms"))~.
• Removing quotes may allow a broader search: (((( qoe estimation algorithm ) or ( qoe optimized algorithm ))) or ( _ optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (((("qoe estimation algorithm") or ("qoe optimized algorithm"))) or ("_ optimization algorithms"))*.