Perhaps you should try some spelling variations:
"coder coder _ classical problem" » "coder coder _ clinical problem" (Expand search), "coder coder _ logical problem" (Expand search), "coder decoder _ classical problem" (Expand search), "code code _ classical problem" (Expand search), "decoder codec _ classical 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 _ classical problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder _ classical problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder _ classical problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder _ classical problem") OR ("api python python python programming"))*.