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

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("_ estimation algorithms") or ((("most optimizer algorithms") or ("cost optimizer algorithms"))))~.
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