Perhaps you should try some spelling variations:
"coder coder secondary challenging problem" » "coder coder secondary challenge problem" (Expand search), "coder coder secondary hardening problem" (Expand search), "coder coder secondary thickening problem" (Expand search), "coder coder secondary charging problem" (Expand search), "coder coder secondary chattering problem" (Expand search), "coder coder secondary challenging proposal" (Expand search), "coder lower secondary challenging problem" (Expand search), "coder under secondary challenging problem" (Expand search), "coder over secondary challenging problem" (Expand search), "coder decoder secondary challenging problem" (Expand search), "code code secondary challenging problem" (Expand search), "decoder codec secondary challenging 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 secondary challenging problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder secondary challenging problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder secondary challenging problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder secondary challenging problem") OR ("api python python python programming"))*.