Perhaps you should try some spelling variations:
"same optimization algorithmssssssssssssss" » "same optimisation algorithmsssssssssssss", "same estimation algorithmssssssssssssss", "same estimation algorithmsssssssssssss", "game optimization algorithmssssssssssssss", "stage optimization algorithmssssssssssssss", "qoe optimization algorithmssssssssssssss"
"parameter optimization algorithms" » "parameter optimisation algorithm", "parameter estimation algorithms", "parameter estimation algorithm", "parameters optimization algorithms"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("same optimization algorithmssssssssssssss") or ("parameter optimization algorithms"))~.
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• Removing quotes may allow a broader search: (( same optimization algorithmssssssssssssss ) or ( parameter optimization algorithms )).
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