Perhaps you should try some spelling variations:
"_ optimization algorithm" » "_ optimization algorithms", "_ optimisation algorithm", "_ estimation algorithm"
"_ estimation algorithms" » "_ estimation algorithm", "_ optimization algorithms", "_ optimisation algorithm"
"pulsed optimized algorithm" » "pulsed optimized algorithms", "pulsed optimizer algorithms", "pulse optimized algorithm"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("pulsed optimized algorithm") or ((("_ estimation algorithms") or ("_ optimization algorithm"))))~.
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