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

Try widening your search to All Fields.

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