Perhaps you should try some spelling variations:
"modified notion estimation algorithmss" » "modified notion estimation algorithm", "modified notion optimization algorithms", "modified notion estimation algorithms", "modified notion optimization algorithmss", "modified notion optimisation algorithms", "modified motion estimation algorithmss"
"verified network estimation algorithms" » "verified network estimation algorithm", "verified network optimization algorithms", "verified network optimisation algorithm", "certified network estimation algorithms", "defined network estimation algorithms"

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