Perhaps you should try some spelling variations:
"using computation in computational program" » "using computational in computational program" (Expand search), "using imputation in computational program" (Expand search), "using compilation in computational program" (Expand search), "using computation and computational program" (Expand search), "using computation _ computational program" (Expand search), "using computation of computational program" (Expand search)
"advanced validity based coding program" » "advanced facility based coding program" (Expand search), "advanced quality based coding program" (Expand search), "advanced validity and coding program" (Expand search), "advanced solidarity based coding program" (Expand search), "advanced validity based cloning program" (Expand search), "advanced validity based loading program" (Expand search), "advanced validity based cooling programs" (Expand search), "advanced validity based costing program" (Expand search), "advanced validity based coating program" (Expand search), "advanced validity based coatings program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced validity based coding program\") OR (\"using computation in computational program\"))~".
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