Perhaps you should try some spelling variations:
"coder coder bit clustering problem" » "coder coder bit covering problem" (Expand search), "coder coder bi clustering problem" (Expand search), "coder coder city clustering problem" (Expand search), "coder coder by clustering problem" (Expand search), "coder decoder bit clustering problem" (Expand search), "code code bit clustering problem" (Expand search), "decoder codec bit clustering problem" (Expand search), "coder lower bit 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 bit clustering problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder bit clustering problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder bit clustering problem ) OR ( api python python python programming ))*.