Perhaps you should try some spelling variations:
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"variance function from cooking program" » "variance functions from cooking program" (Expand search), "covariance function from cooking program" (Expand search), "covariance functions from cooking program" (Expand search), "variance function from cooling programs" (Expand search), "variance function from smoking program" (Expand search), "variance function from cloning program" (Expand search), "variance function food cooking program" (Expand search), "variance function from working program" (Expand search), "variance function of cooking program" (Expand search)

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