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