Perhaps you should try some spelling variations:
"modeling computation using computer program" » "modeling computational using computer program" (Expand search), "modeling simulation using computer program" (Expand search), "modeling notation using computer program" (Expand search), "modeling computations using computer program" (Expand search), "modeling computation in computer program" (Expand search), "modeling composition using computer program" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

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