Perhaps you should try some spelling variations:
"coder coder concept duplication problem" » "coder coder concept application problem" (Expand search), "coder coder concepts application problem" (Expand search), "coder coder concepts applications problem" (Expand search), "coder coder concept lubrication problems" (Expand search), "coder coder concept equalization problem" (Expand search), "coder coder concept location problem" (Expand search), "coder code concept duplication problem" (Expand search), "coder modern concept duplication problem" (Expand search), "coder border concept duplication problem" (Expand search), "coder decoder concept duplication problem" (Expand search), "code code concept duplication problem" (Expand search), "decoder codec concept duplication problem" (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 concept duplication problem") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder concept duplication problem\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder concept duplication problem ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder concept duplication problem") OR ("_ python python python programming"))*.