Perhaps you should try some spelling variations:
"coder coder time clustering problem" » "coder coder time covering problem" (Expand search), "coder coder based clustering problem" (Expand search), "coder decoder time clustering problem" (Expand search), "code code time clustering problem" (Expand search), "decoder codec time clustering problem" (Expand search), "coder cover time clustering problem" (Expand search), "coder modern time clustering problem" (Expand search), "coder over time clustering 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 time clustering problem") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder time clustering problem\") OR (\"in python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder time clustering problem ) OR ( in python python python programming ))*.