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

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