Perhaps you should try some spelling variations:
"modified objective optimizer algorithms" » "modified objective optimized algorithms", "modified objective optimized algorithm", "modified objective optimization algorithms", "modified objective optimal algorithms", "modified objective optimized algorithmss"
"modified choosing optimizer algorithm" » "modified choosing optimized algorithm", "modified choosing optimized algorithms", "modified caging optimizer algorithm"

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