Perhaps you should try some spelling variations:
"coder coder sampling protocol on" » "coder under sampling protocol on" (Expand search), "coder over sampling protocol on" (Expand search), "coder core sampling protocol on" (Expand search), "coder decoder sampling protocol on" (Expand search), "code code sampling protocol on" (Expand search), "decoder codec sampling protocol on" (Expand search), "coder coder sampling protocol of" (Expand search), "coder coder sampling protocol in" (Expand search), "coder coder sampling protocol and" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons 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 protocol on") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder sampling protocol on\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder sampling protocol on ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder sampling protocol on") OR ("_ python python python programming"))*.