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