Perhaps you should try some spelling variations:
"modified parameters optimization algorithms" » "modified parameter optimization algorithms", "modified parameter estimation algorithms", "modified parameters optimisation algorithm", "modified parameters estimation algorithms", "modified parameters estimation algorithm"
"modified static optimisation algorithms" » "modified static optimisation algorithm", "modified static estimation algorithms", "modified static estimation algorithm", "modified static optimization algorithms", "modified stage optimization algorithms", "modified stochastic optimization algorithms"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified parameters optimization algorithms\") OR (\"modified static optimisation algorithms\"))~".
• Removing quotes may allow a broader search: (( modified parameters optimization algorithms ) OR ( modified static optimisation algorithms ))~.
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