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

Try widening your search to All Fields.

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