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 string tree problem cpp" » "cordel string tree problem cpp" (Expand search), "closed string tree problem cpp" (Expand search), "modelo string tree problem cpp" (Expand search), "coder string the problem cpp" (Expand search), "coder string tree problem clp" (Expand search), "coder string tree problem gap" (Expand search), "coder string tree problem frp" (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 string tree problem cpp") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder string tree problem cpp\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder string tree problem cpp ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder string tree problem cpp") OR ("api python python python programming"))*.