Perhaps you should try some spelling variations:
"modified game optimization algorithm" » "modified game optimization algorithms", "modified game optimisation algorithm", "modified game estimation algorithm", "modified stage optimization algorithm", "modified qoe optimization algorithm", "modified market optimization algorithm", "modified adam optimization algorithm"
"modified male solution algorithm" » "modified male evolution algorithm", "modified male convolution algorithms", "modified male evolutionary algorithm", "modified saline solution algorithm", "modified mild solutions algorithm", "modified water solution algorithm"

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