Perhaps you should try some spelling variations:
"modified objective optimisation algorithm" » "modified objective optimization algorithm", "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective estimation algorithm", "modified objective estimation algorithms"
"modified aging solution algorithm" » "modified aging evolution algorithm", "modified aging convolution algorithms", "modified aging evolutionary algorithm", "modified caging solution algorithm", "modified saline solution algorithm"

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