Perhaps you should try some spelling variations:
"coder coder gran sample problem" » "coder coder gran complex problem" (Expand search), "coder coder gran scale problem" (Expand search), "coder decoder gran sample problem" (Expand search), "code code gran sample problem" (Expand search), "decoder codec gran sample problem" (Expand search), "coder coder grain samples problem" (Expand search), "coder coder urban sample problem" (Expand search), "coder coder green sample problem" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 gran sample problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder gran sample problem\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder gran sample problem ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder gran sample problem") OR ("on python python python programming"))*.