Perhaps you should try some spelling variations:
"_ estimation algorithms" » "_ estimation algorithm", "_ optimization algorithms", "_ optimisation algorithm"
"_ optimized algorithm" » "_ optimized algorithms", "_ optimizer algorithms"
"qoe approximation algorithms" » "one approximation algorithms", "time approximation algorithms", "_ approximation algorithms"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"qoe approximation algorithms\") OR (((\"_ estimation algorithms\") OR (\"_ optimized algorithm\"))))~".
• Removing quotes may allow a broader search: (( qoe approximation algorithms ) OR ((( _ estimation algorithms ) OR ( _ optimized algorithm ))))~.
• Adding a wildcard symbol may retrieve word variants: (("qoe approximation algorithms") OR ((("_ estimation algorithms") OR ("_ optimized algorithm"))))*.