Perhaps you should try some spelling variations:
"modified objective optimized algorithms" » "modified objective optimized algorithm", "modified objective optimizer algorithms", "modified objective optimization algorithms", "modified objective optimal algorithms"
"modified df solutions algorithm" » "modified df solution algorithm", "modified df evolution algorithm", "modified df evolutionary algorithm", "modified _ solutions algorithm", "modified up solutions algorithm", "modified _ solution algorithm", "modified adam solutions algorithm", "modified bi1 solutions algorithm"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective optimized algorithms\") OR (\"modified df solutions algorithm\"))~".
• Removing quotes may allow a broader search: (( modified objective optimized algorithms ) OR ( modified df solutions algorithm ))~.
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