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

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

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