Perhaps you should try some spelling variations:
"coder coder convent _ programming" » "coder code content _ programming" (Expand search), "coder former convent _ programming" (Expand search), "coder code concept _ programming" (Expand search), "coder decoder convent _ programming" (Expand search), "code code convent _ programming" (Expand search), "decoder codec convent _ 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 coder convent _ programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder convent _ programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder convent _ programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder convent _ programming") OR ("on python python python programming"))*.