Perhaps you should try some spelling variations:
"coder coder challenge teaching problem" » "coder coder challenges teaching problem" (Expand search), "coder coder challenge learning problem" (Expand search), "coder coder challenge testing problem" (Expand search), "coder coder challenge teaching program" (Expand search), "coder coder challenge teaching profile" (Expand search), "coder coder challenge teaching programs" (Expand search), "coder tower challenge teaching problem" (Expand search), "coder under challenge teaching problem" (Expand search), "coder elders challenge teaching problem" (Expand search), "coder decoder challenge teaching problem" (Expand search), "code code challenge teaching problem" (Expand search), "decoder codec challenge teaching 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 challenge teaching problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder challenge teaching problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder challenge teaching problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder challenge teaching problem") OR ("api python python python programming"))*.