Perhaps you should try some spelling variations:
"modified invasive optimization algorithmss" » "modified invasive optimization algorithms", "modified invasive optimisation algorithm", "modified invasive estimation algorithms", "modified invasive optimization algorithmsss", "modified invasive optimisation algorithmss", "modified invasive estimation algorithmss", "modified passive optimization algorithmss"
"modified stochastic optimization algorithm" » "modified stochastic optimization algorithms", "modified stochastic optimisation algorithm", "modified stochastic estimation algorithm"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified invasive optimization algorithmss\") OR (\"modified stochastic optimization algorithm\"))~".
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