Perhaps you should try some spelling variations:
"coder coding using extreme programming" » "coder coding during extreme programming" (Expand search), "coder coding in extreme programming" (Expand search), "coder coding using extract programming" (Expand search), "modern coding using extreme programming" (Expand search), "color coding using extreme programming" (Expand search), "odor coding using extreme programming" (Expand search), "coder loading using extreme programming" (Expand search), "coder modeling using extreme programming" (Expand search), "coder drying using extreme programming" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 coding using extreme programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding using extreme programming\") OR (\"on python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coding using extreme programming ) OR ( on python python python programming ))*.