Perhaps you should try some spelling variations:
"coder coder soft clustering problem" » "coder coder soft covering problem" (Expand search), "coder coder text clustering problem" (Expand search), "coder coder co clustering problem" (Expand search), "coder coder forest clustering problem" (Expand search), "coder decoder soft clustering problem" (Expand search), "code code soft clustering problem" (Expand search), "decoder codec soft clustering problem" (Expand search), "coder poder soft clustering problem" (Expand search), "coder codes soft clustering problem" (Expand search), "coder over soft 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 soft clustering problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder soft clustering problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder soft clustering problem ) OR ( api python python python programming ))*.