Perhaps you should try some spelling variations:
"coder code complexity channels problems" » "coder code complexity channel problems" (Expand search), "coder code complexity classes problems" (Expand search), "coder code complexity chaos problems" (Expand search), "coder case complexity channels problems" (Expand search), "coder the complexity channels problems" (Expand search), "coder and complexity channels problems" (Expand search), "code code complexity channels problems" (Expand search), "modern code complexity channels problems" (Expand search), "color code complexity channels 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)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder code complexity channels problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder code complexity channels problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder code complexity channels problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder code complexity channels problems") OR ("api python python python programming"))*.