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

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