Perhaps you should try some spelling variations:
"modified allocation optimisation algorithm" » "modified allocation optimization algorithm", "modified allocation optimization algorithms", "modified allocation estimation algorithm", "modified allocation estimation algorithms"
"modified charging optimisation algorithms" » "modified charging optimization algorithms", "modified charging estimation algorithms", "modified charging estimation algorithm", "modified charging optimization algorithmss", "modified charging estimation algorithmss", "modified staffing optimization algorithms", "modified caging optimisation algorithms", "modified carbon optimisation algorithms"

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