Perhaps you should try some spelling variations:
"modified notion approximation algorithms" » "modified network approximation algorithms", "modified time approximation algorithms", "modified one approximation algorithms"
"modified based evolution algorithm" » "modified based solution algorithm", "modified based evolutionary algorithm", "modified based convolution algorithms", "modified based evaluation algorithm", "modified based solutions algorithm", "modified sales evolution algorithm", "modified male evolution algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified notion approximation algorithms") OR ("modified based evolution algorithm"))~.
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