Perhaps you should try some spelling variations:
"modified changing optimization algorithmss" » "modified changing optimization algorithms", "modified changing optimisation algorithm", "modified changing estimation algorithms", "modified staffing optimization algorithmss", "modified caging optimization algorithmss"
"modified objective predation algorithm" » "modified objective allocation algorithm", "modified objective predators algorithm", "modified objective estimation algorithm"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified changing optimization algorithmss") OR ("modified objective predation algorithm"))~.
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