Perhaps you should try some spelling variations:
"modified male approximation algorithm" » "modified male approximation algorithms", "modified one approximation algorithm", "modified time approximation algorithm", "modified _ approximation algorithm"
"modified objective solution algorithm" » "modified objective evolutionary algorithm", "modified objective allocation algorithm", "modified objective evolution algorithm", "modified objective convolution algorithms"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified objective solution algorithm") OR ("modified male approximation algorithm"))~.
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