Perhaps you should try some spelling variations:
"coder sampling _ python coding" » "under sampling _ python coding" (Expand search), "core sampling _ python coding" (Expand search), "over sampling _ python coding" (Expand search), "coder sampling _ python codigo" (Expand search), "coder sampling _ action coding" (Expand search), "coder sampling _ python code" (Expand search)
"via python python python programming" » "via pythons python python programming" (Expand search), "via piton python python programming" (Expand search), "via pitons python python programming" (Expand search), "in 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 sampling _ python coding") OR ("via python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder sampling _ python coding\") OR (\"via python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder sampling _ python coding ) OR ( via python python python programming ))*.