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

Try widening your search to All Fields.

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