Perhaps you should try some spelling variations:
"_ optimization algorithms" » "_ estimation algorithms", "_ estimation algorithm", "_ optimized algorithms"
"_ optimisation algorithm" » "_ estimation algorithm", "_ estimation algorithms"
"qoe optimized algorithm" » "qoe optimized algorithms", "qoe optimizer algorithms", "_ 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: (((("_ optimization algorithms") OR ("_ optimisation algorithm"))) OR ("qoe optimized algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"_ optimization algorithms\") OR (\"_ optimisation algorithm\"))) or (\"qoe optimized algorithm\"))~".
• Removing quotes may allow a broader search: (((( _ optimization algorithms ) OR ( _ optimisation algorithm ))) or ( qoe optimized algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (((("_ optimization algorithms") OR ("_ optimisation algorithm"))) or ("qoe optimized algorithm"))*.