Perhaps you should try some spelling variations:
"coder coder some duplication problem" » "coder coder some lubrication problems" (Expand search), "coder coder some equalization problem" (Expand search), "coder coder some location problem" (Expand search), "coder coder some application problem" (Expand search), "coder coder sox3 duplication problem" (Expand search), "coder coder genome duplication problem" (Expand search), "coder decoder some duplication problem" (Expand search), "code code some duplication problem" (Expand search), "decoder codec some duplication problem" (Expand search), "coder code some duplication problem" (Expand search), "coder border some duplication problem" (Expand search), "coder over some 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder some duplication problem\") OR (\"_ python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder some duplication problem ) OR ( _ python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder some duplication problem") OR ("_ python python python programming"))*.