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