Perhaps you should try some spelling variations:
"modified notion optimizer algorithms" » "modified notion optimized algorithms", "modified notion optimized algorithm", "modified notion optimization algorithms"
"modified nacl solution algorithm" » "modified nacl evolution algorithm", "modified nacl convolution algorithms", "modified nacl evolutionary algorithm", "modified male solution algorithm", "modified near solution algorithm", "modified orca solution algorithm", "modified exact solution algorithm", "modified nodal solution algorithm"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified nacl solution algorithm") OR ("modified notion optimizer algorithms"))~.
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