Perhaps you should try some spelling variations:
"modified objective convolution algorithms" » "modified objective evolution algorithm", "modified objective solution algorithm"
"modified df prediction algorithm" » "modified df predation algorithm", "modified df predators algorithm", "modified _ prediction algorithm", "modified a prediction algorithm", "modified admet prediction algorithm", "modified adam prediction algorithm", "modified bi1 prediction algorithm"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified df prediction algorithm") OR ("modified objective convolution algorithms"))*.
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