Perhaps you should try some spelling variations:
"coder coder sampling external problem" » "coder coder sampling interval problem" (Expand search), "coder coder scoping external problem" (Expand search), "coder coder sampling intervals problem" (Expand search), "coder coder sampling external problems" (Expand search), "coder coder sampling internal problems" (Expand search), "coder coder sampling extremal problem" (Expand search), "coder under sampling external problem" (Expand search), "coder over sampling external problem" (Expand search), "coder core sampling external problem" (Expand search), "coder decoder sampling external problem" (Expand search), "code code sampling external problem" (Expand search), "decoder codec sampling external 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 sampling external problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder sampling external problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder sampling external problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder sampling external problem") OR ("api python python python programming"))*.