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

Try widening your search to All Fields.

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