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

Try widening your search to All Fields.

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