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

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("pulses estimation algorithms") or ((("_ optimise algorithms") or ("qoe optimized algorithms"))))~.
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• Adding a wildcard symbol may retrieve word variants: (("pulses estimation algorithms") or ((("_ optimise algorithms") or ("qoe optimized algorithms"))))*.