Perhaps you should try some spelling variations:
"parameters estimation algorithmssssssssss" » "parameter estimation algorithmssssssssss", "parameter estimates algorithmssssssssss", "parameter optimization algorithmssssssssss", "parameters estimation algorithmsssssssss", "parameters optimization algorithmssssssssss", "parameters optimisation algorithmsssssssss"
"allocation estimation algorithms" » "allocation optimization algorithms", "motion estimation algorithms", "allocation estimation algorithm", "allocation optimisation algorithm"

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