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