Perhaps you should try some spelling variations:
"coder coder precoding language processing" » "coder coder reading language processing" (Expand search), "coder coder processing language processing" (Expand search), "coder coder welcoming language processing" (Expand search), "coder coherent precoding language processing" (Expand search), "coder linear precoding language processing" (Expand search), "coder decoder precoding language processing" (Expand search), "code code precoding language processing" (Expand search), "decoder codec precoding language processing" (Expand search)
"api _ python python programming" » "api _ pythons python programming" (Expand search), "api _ piton python programming" (Expand search), "api _ pitons python programming" (Expand search)

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