Perhaps you should try some spelling variations:
"modified multiobjective optimizer algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective optimized algorithms", "modified multiobjective optimized algorithm"
"modified co convolution algorithms" » "modified co evolution algorithm", "modified co solution algorithm", "modified co evolution algorithms", "modified _ convolution algorithms", "modified df convolution algorithms", "modified orca convolution algorithms"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified multiobjective optimizer algorithms\") OR (\"modified co convolution algorithms\"))~".
• Removing quotes may allow a broader search: (( modified multiobjective optimizer algorithms ) OR ( modified co convolution algorithms ))~.
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