Perhaps you should try some spelling variations:
"coder coder line clustering problem" » "coder coder line covering problem" (Expand search), "coder coder like clustering problem" (Expand search), "coder coder online clustering problem" (Expand search), "coder coder time clustering problem" (Expand search), "coder decoder line clustering problem" (Expand search), "code code line clustering problem" (Expand search), "decoder codec line clustering problem" (Expand search), "coder border line clustering problem" (Expand search), "coder power line clustering problem" (Expand search), "coder code lines clustering problem" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa 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 line clustering problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder line clustering problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder line clustering problem ) OR ( api python python python programming ))*.