Perhaps you should try some spelling variations:
"modified caging optimization algorithmss" » "modified caging optimization algorithms", "modified caging optimisation algorithm", "modified caging estimation algorithms", "modified caging optimization algorithmsss", "modified caging optimisation algorithmss", "modified caging estimation algorithmss", "modified staffing optimization algorithmss"
"modified static optimization algorithm" » "modified static optimization algorithms", "modified static optimisation algorithm", "modified static estimation algorithm", "modified stage optimization algorithm", "modified stochastic optimization algorithm", "modified staffing optimization algorithm"

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