Perhaps you should try some spelling variations:
"parameters optimization algorithms" » "parameter optimization algorithms", "parameter estimation algorithms", "parameters optimisation algorithm", "parameters estimation algorithms", "parameters estimation algorithm"
"attributes optimization algorithmssssssss" » "attributes optimisation algorithmsssssss", "attributes estimation algorithmssssssss", "attributes estimation algorithmsssssss", "attribute optimization algorithmssssssss"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("parameters optimization algorithms") or ("attributes optimization algorithmssssssss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("parameters optimization algorithms") OR ("attributes optimization algorithmssssssss")).
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