Perhaps you should try some spelling variations:
"modified notion approximation algorithms" » "modified network approximation algorithms", "modified time approximation algorithms", "modified one approximation algorithms"
"modified up evolution algorithm" » "modified up solution algorithm", "modified up evolutionary algorithm", "modified up convolution algorithms", "modified _ evolution algorithm", "modified co evolution algorithm", "modified up solutions algorithm", "modified df evolution algorithm", "modified bi1 evolution algorithm"

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