Perhaps you should try some spelling variations:
"modified parameter optimization algorithmss" » "modified parameter optimization algorithms", "modified parameter optimisation algorithm", "modified parameter estimation algorithms", "modified parameter optimization algorithmsss", "modified parameter optimisation algorithmss", "modified parameter estimation algorithmss", "modified parameters optimization algorithmss"
"modified network optimization algorithm" » "modified network optimization algorithms", "modified network optimisation algorithm", "modified network estimation algorithm", "certified network optimization algorithm", "defined network optimization algorithm", "modified near optimization algorithm"

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