Perhaps you should try some spelling variations:
"modified motion estimation algorithmss" » "modified motion estimation algorithm", "modified motion optimization algorithms", "modified motion estimation algorithms", "modified motion optimization algorithmss", "modified motion optimisation algorithms", "modified notion estimation algorithmss"
"modified parameters estimation algorithms" » "modified parameter estimation algorithms", "modified parameter estimates algorithms", "modified parameter optimization algorithms", "modified parameters estimation algorithm", "modified parameters optimization algorithms", "modified parameters optimisation algorithm"

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