Perhaps you should try some spelling variations:
duplication problem » lubrication problems (Expand search), equalization problem (Expand search), location problem (Expand search)
scale duplication » scale application (Expand search), scale replication (Expand search), scale applications (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
coder coder » coder decoder (Expand search), code code (Expand search), decoder codec (Expand search)
coder scale » cover scale (Expand search), color scale (Expand search), model scale (Expand search)
in python » _ python (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 scale duplication problem ) OR ( in python python python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( coder coder scale duplication problem ) OR ( in python python python programming ))*.