Perhaps you should try some spelling variations:
"_ optimization algorithm" » "_ optimization algorithms", "_ optimisation algorithm", "_ estimation algorithm"
"most optimizer algorithms" » "most optimized algorithms", "most optimization algorithms", "mot optimizer algorithms"
"post optimized algorithm" » "post optimized algorithms", "cost optimized algorithm"

Try widening your search to All Fields.

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