Perhaps you should try some spelling variations:
"_ optimization algorithm" » "_ optimization algorithms", "_ optimisation algorithm", "_ estimation algorithm"
"jose estimation algorithms" » "jose estimation algorithm", "jose optimization algorithms", "jose optimisation algorithm", "pose estimation algorithms", "risk estimation algorithms", "cover estimations algorithms"
"_ optimizer algorithms" » "_ optimized algorithms", "_ optimized algorithm", "_ optimization algorithms"

Try widening your search to All Fields.

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