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

Try widening your search to All Fields.

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