Perhaps you should try some spelling variations:
"_ optimization algorithm" » "_ optimization algorithms", "_ optimisation algorithm", "_ estimation algorithm"
"done optimized algorithms" » "done optimizer algorithms", "done optimization algorithms", "done optimizer algorithmss"
"dose optimized algorithm" » "dose optimizer algorithms", "jose optimized algorithm"

Try widening your search to All Fields.

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