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

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