Perhaps you should try some spelling variations:
"modified response estimation algorithms" » "modified response estimation algorithm", "modified response optimization algorithms", "modified response optimisation algorithm", "modified pose estimation algorithms", "modified response association algorithms"
"modified parameter optimized algorithms" » "modified parameter optimized algorithm", "modified parameter optimizer algorithms", "modified parameter optimization algorithms"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified parameter optimized algorithms\") OR (\"modified response estimation algorithms\"))~".
• Removing quotes may allow a broader search: (( modified parameter optimized algorithms ) OR ( modified response estimation algorithms ))~.
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