Perhaps you should try some spelling variations:
"modified notion approximation algorithms" » "modified network approximation algorithms", "modified time approximation algorithms", "modified one approximation algorithms"
"modified four solution algorithm" » "modified four evolution algorithm", "modified four convolution algorithms", "modified four evolutionary algorithm", "modified near solution algorithm", "modified flour solution algorithm", "modified drug solution algorithm"

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