Perhaps you should try some spelling variations:
"most optimized algorithms" » "most optimizer algorithms", "most optimization algorithms", "most optimizer algorithmss", "mot optimized algorithms"
"cost optimized algorithm" » "cost optimizer algorithms"
"qoe estimation algorithm" » "pose estimation algorithm", "_ estimation algorithm", "cover estimations algorithm"

Try widening your search to All Fields.

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