Perhaps you should try some spelling variations:
"coder propagation using computer code" » "mode propagation using computer code" (Expand search), "model propagation using computer code" (Expand search), "modes propagation using computer code" (Expand search), "coder propagation in computer code" (Expand search), "coder propagation and computer code" (Expand search), "coder propagation on computer code" (Expand search), "coder propagation using computer codes" (Expand search), "coder propagation using computer model" (Expand search), "coder propagation using computer aided" (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 using computer code") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder propagation using computer code\") OR (\"using coding python python programming\"))*".
• Removing quotes may allow a broader search: (( coder propagation using computer code ) OR ( using coding python python programming ))*.