Perhaps you should try some spelling variations:
"coder coder teaching method problems" » "coder coder teaching methods problems" (Expand search), "coder coder teaching methodology problems" (Expand search), "coder coder teaching method process" (Expand search), "coder code teaching method problems" (Expand search), "coder poder teaching method problems" (Expand search), "coder model teaching method problems" (Expand search), "coder decoder teaching method problems" (Expand search), "code code teaching method problems" (Expand search), "decoder codec teaching method problems" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons 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 coder teaching method problems") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder teaching method problems\") OR (\"_ python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder teaching method problems ) OR ( _ python python python programming ))*.