Perhaps you should try some spelling variations:
"teaching computation using computer program" » "teaching computational using computer program" (Expand search), "teaching competitions using computer program" (Expand search), "teaching compensation using computer program" (Expand search), "teaching computations using computer program" (Expand search), "teaching computation in computer program" (Expand search), "teaching composition using computer program" (Expand search)
"using model in python programming" » "ising model in python programming" (Expand search), "using modis in python programming" (Expand search), "using mobile in python programming" (Expand search), "using model _ python programming" (Expand search)

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• Adding a wildcard symbol may retrieve word variants: (("teaching computation using computer program") OR ("using model in python programming"))*.