Perhaps you should try some spelling variations:
"modified df convolution algorithms" » "modified df evolution algorithm", "modified df solution algorithm", "modified d convolutional algorithms", "modified _ convolution algorithms", "modified adam convolution algorithms", "modified bi1 convolution algorithms"
"modified dfverage approximation algorithms" » "modified average approximation algorithms", "modified _verage approximation algorithms", "modified adamverage approximation algorithms", "modified bi1verage approximation algorithms"

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