Perhaps you should try some spelling variations:
"coder and complexity duplication problem" » "coder and complexity application problem" (Expand search), "coder and complexity education problem" (Expand search), "coder and complexity simplification problem" (Expand search), "coder and complexity lubrication problems" (Expand search), "coder and complexity location problem" (Expand search), "coder and complexity allocation problem" (Expand search), "code and complexity duplication problem" (Expand search), "codes and complexity duplication problem" (Expand search), "poder and complexity 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 and complexity duplication problem\") OR (\"_ python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder and complexity duplication problem ) OR ( _ python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder and complexity duplication problem") OR ("_ python python python programming"))*.