Perhaps you should try some spelling variations:
"based computations in computer program" » "based computation in computer program" (Expand search), "based computational in computer program" (Expand search), "based competition in computer program" (Expand search), "based computation of computer program" (Expand search), "based computation and computer program" (Expand search), "based computations _ computer program" (Expand search)
"using modeling python python programming" » "using modeling vpython python programming" (Expand search), "using modeling pitting python programming" (Expand search), "using model python python programming" (Expand search), "using modern python python programming" (Expand search), "using models python python programming" (Expand search), "using modeling pythons python programming" (Expand search), "using modeling piton python programming" (Expand search), "using modeling pitons python programming" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based computations in computer program\") OR (\"using modeling python python programming\"))~".
• Removing quotes may allow a broader search: (( based computations in computer program ) OR ( using modeling python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("based computations in computer program") OR ("using modeling python python programming"))*.