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