Perhaps you should try some spelling variations:
"modified delphi convolutional algorithms" » "modified delphi convolution algorithms", "modified delphi evolution algorithm", "modified delphi evolutionary algorithm", "modified deep convolutional algorithms", "modified graph convolutional algorithms", "modified d convolutional algorithms"
"modified cover estimations algorithm" » "modified cover estimation algorithm", "modified cover estimation algorithms", "modified cover optimisation algorithm", "modified pose estimation algorithm"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified delphi convolutional algorithms") OR ("modified cover estimations algorithm"))~.
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