Perhaps you should try some spelling variations:
"qoe optimized algorithmss" » "qoe optimized algorithms", "qoe optimized algorithm", "_ optimized algorithmss"
"_ optimizer algorithms" » "_ optimized algorithms", "_ optimized algorithm", "_ optimization algorithms", "_ optimize algorithms", "_ optimise algorithms"
"risk estimation algorithm" » "pose estimation algorithm"

Try widening your search to All Fields.

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