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