Perhaps you should try some spelling variations:
"parameters optimization algorithm" » "parameter optimization algorithm", "parameter estimation algorithm", "parameters optimization algorithms", "parameters optimisation algorithm", "parameters estimation algorithm"
"write optimization algorithmssssssssss" » "write optimization algorithmsssssssssss", "write optimisation algorithmssssssssss", "write estimation algorithmssssssssss", "game optimization algorithmssssssssss", "qoe optimization algorithmssssssssss", "stage optimization algorithmssssssssss"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("write optimization algorithmssssssssss") or ("parameters optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("write optimization algorithmssssssssss") OR ("parameters optimization algorithm")).
• Removing quotes may allow a broader search: (( write optimization algorithmssssssssss ) or ( parameters optimization algorithm )).
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