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 virus prediction algorithm" » "modified virus predation algorithm", "modified virus predators algorithm", "modified fire prediction algorithm", "modified risk prediction algorithm"

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