Perhaps you should try some spelling variations:
"modified stochastic configuration algorithm" » "modified stochastic optimization algorithm"
"defined network optimization algorithm" » "defined network optimization algorithms", "defined network optimisation algorithm", "defined network estimation algorithm"

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