Perhaps you should try some spelling variations:
"machines learning convolution algorithms" » "machines learning evolution algorithm", "machines learning solution algorithm", "machine learning convolution algorithms", "active learning convolution algorithms", "mapping learning convolution algorithms"
"modified objective allocation algorithm" » "modified objective estimation algorithm", "modified objective evolution algorithm", "modified objective predation algorithm"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"machines learning convolution algorithms\") OR (\"modified objective allocation algorithm\"))~".
• Removing quotes may allow a broader search: (( machines learning convolution algorithms ) OR ( modified objective allocation algorithm ))~.
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