Perhaps you should try some spelling variations:
"modeling computation using on program" » "modeling computational using on program" (Expand search), "modeling simulation using on program" (Expand search), "modeling notation using on program" (Expand search), "modeling computations using on program" (Expand search), "modeling computation in on program" (Expand search), "modeling composition using on program" (Expand search), "modeling computation using of program" (Expand search), "modeling computation using open program" (Expand search), "modeling computation using only 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modeling computation using on program") OR ("using python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modeling computation using on program\") OR (\"using python python python programming\"))*".
• Removing quotes may allow a broader search: (( modeling computation using on program ) OR ( using python python python programming ))*.