Perhaps you should try some spelling variations:
"modified trace convolution algorithms" » "modified trace evolution algorithm", "modified trace solution algorithm", "modified trained convolutional algorithms", "modified traces convolution algorithms", "modified male convolution algorithms", "modified orca convolution algorithms"
"modified time approximation algorithms" » "modified one approximation algorithms", "modified _ approximation algorithms", "modified bi1 approximation algorithms", "modified male approximation algorithms"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified trace convolution algorithms\") OR (\"modified time approximation algorithms\"))~".
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