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

Try widening your search to All Fields.

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