Perhaps you should try some spelling variations:
"coder propagation models example program" » "coder propagation model example program" (Expand search), "mode propagation models example program" (Expand search), "model propagation models example program" (Expand search), "modes propagation models example program" (Expand search), "coder propagation model examples program" (Expand search), "coder propagation modeling example program" (Expand search), "coder propagation models simple 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: (("coder propagation models example program") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder propagation models example program\") OR (\"using coding python python programming\"))*".
• Removing quotes may allow a broader search: (( coder propagation models example program ) OR ( using coding python python programming ))*.