Perhaps you should try some spelling variations:
"modeling computation in peg program" » "modeling computational in peg program" (Expand search), "modeling simulation in peg program" (Expand search), "modeling notation in peg program" (Expand search), "modeling computation and peg program" (Expand search), "modeling computation of peg program" (Expand search), "modeling imputation in peg program" (Expand search), "modeling computation in pg program" (Expand search), "modeling computation in bag program" (Expand search), "modeling computation in dog program" (Expand search), "modeling computation in pea program" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking 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 in peg program") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modeling computation in peg program\") OR (\"using coding python python programming\"))*".
• Removing quotes may allow a broader search: (( modeling computation in peg program ) OR ( using coding python python programming ))*.