Perhaps you should try some spelling variations:
"modified parameter optimized algorithmssss" » "modified parameter optimized algorithms", "modified parameter optimizer algorithms", "modified parameter optimized algorithmsssss", "modified parameter optimizer algorithmsssss", "modified parameter optimization algorithmssss"
"modified stochastic optimized algorithm" » "modified stochastic optimization algorithm", "modified stochastic optimized algorithms", "modified stochastic optimizer algorithms"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified stochastic optimized algorithm\") OR (\"modified parameter optimized algorithmssss\"))~".
• Removing quotes may allow a broader search: (( modified stochastic optimized algorithm ) OR ( modified parameter optimized algorithmssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified stochastic optimized algorithm") OR ("modified parameter optimized algorithmssss"))*.