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

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified stochastic estimation algorithmss\") OR (\"modified parameters estimation algorithm\"))~".
• Removing quotes may allow a broader search: (( modified stochastic estimation algorithmss ) OR ( modified parameters estimation algorithm ))~.
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