Perhaps you should try some spelling variations:
"coder coder precoder design problem" » "coder coder precoding design problem" (Expand search), "coder coder decoder design problem" (Expand search), "coder decoder precoder design problem" (Expand search), "code code precoder design problem" (Expand search), "decoder codec precoder design problem" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ python 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 precoder design problem") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder precoder design problem\") OR (\"in python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder precoder design problem ) OR ( in python python python programming ))*.