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