Perhaps you should try some spelling variations:
"modified nodal convolution algorithms" » "modified nodal evolution algorithm", "modified nodal solution algorithm", "modified nodal solution algorithms", "modified adam convolution algorithms", "modified near convolution algorithms"
"modified objective optimal algorithm" » "modified objective optimized algorithm", "modified objective optimized algorithms", "modified objective optimizer algorithms"

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