Perhaps you should try some spelling variations:
"modified df solution algorithm" » "modified df evolution algorithm", "modified df convolution algorithms", "modified df evolutionary algorithm", "modified _ solution algorithm", "modified adam solution algorithm", "modified bi1 solution algorithm", "modified drug solution algorithm", "modified up solutions algorithm"
"modified network approximation algorithms" » "certified network approximation algorithms", "defined network approximation algorithms", "modified near approximation algorithms"

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