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 caging optimisation algorithms" » "modified caging optimization algorithms", "modified caging estimation algorithms", "modified caging estimation algorithm", "modified caging optimization algorithmss", "modified caging estimation algorithmss", "modified staffing optimization algorithms"

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