Perhaps you should try some spelling variations:
"modified deep evolutionary algorithm" » "modified deep evolution algorithm", "modified deep solution algorithm", "modified delphi evolutionary algorithm", "modified df evolutionary algorithm", "modified near evolutionary algorithm"
"modified objective optimization algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithm"

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