Perhaps you should try some spelling variations:
"coder coder courses open problems" » "coder center courses open problems" (Expand search), "coder water courses open problems" (Expand search), "coder other courses open problems" (Expand search), "coder coder courses on problems" (Expand search), "coder coder courses in problems" (Expand search), "coder coder courses of problems" (Expand search), "coder decoder courses open problems" (Expand search), "code code courses open problems" (Expand search), "decoder codec courses open problems" (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), "manim 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 courses open problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder courses open problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder courses open problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder courses open problems") OR ("api python python python programming"))*.