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

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("_ estimation algorithmss") or ("_ optimized algorithms"))) or ("qoe optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("_ estimation algorithmss") OR ("_ optimized algorithms"))) OR ("qoe optimization algorithm")).
• Removing quotes may allow a broader search: (((( _ estimation algorithmss ) or ( _ optimized algorithms ))) or ( qoe optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("_ estimation algorithmss") or ("_ optimized algorithms"))) or ("qoe optimization algorithm"))*.