Perhaps you should try some spelling variations:
"coder coder based survey problem" » "coder coder based survey problems" (Expand search), "coder coder based curve problem" (Expand search), "coder coder based survey profiles" (Expand search), "coder decoder based survey problem" (Expand search), "code code based survey problem" (Expand search), "decoder codec based survey problem" (Expand search), "coder code based survey problem" (Expand search), "coder foder based survey problem" (Expand search), "coder codec based survey problem" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ 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 based survey problem") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder based survey problem\") OR (\"in python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder based survey problem ) OR ( in python python python programming ))*.