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