Perhaps you should try some spelling variations:
"coder coding _ sampling error" » "coder coding _ sampling effort" (Expand search), "modern coding _ sampling error" (Expand search), "color coding _ sampling error" (Expand search), "odor coding _ sampling error" (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 coding _ sampling error") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding _ sampling error\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding _ sampling error ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding _ sampling error") OR ("api python python python programming"))*.