Perhaps you should try some spelling variations:
"coder coder teaching method produced" » "coder coder teaching methods produced" (Expand search), "coder coder teaching methodology produced" (Expand search), "coder coder teaching method product" (Expand search), "coder coder teaching method products" (Expand search), "coder code teaching method produced" (Expand search), "coder poder teaching method produced" (Expand search), "coder model teaching method produced" (Expand search), "coder decoder teaching method produced" (Expand search), "code code teaching method produced" (Expand search), "decoder codec teaching method produced" (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)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder teaching method produced") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder teaching method produced\") OR (\"on python python python programming\"))".
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• Adding a wildcard symbol may retrieve word variants: (("coder coder teaching method produced") OR ("on python python python programming"))*.