Perhaps you should try some spelling variations:
perceptions problem » reception problem (Expand search), perceptions from (Expand search), perceptions public (Expand search)
their perceptions » the perceptions (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 their » over their (Expand search), lower their (Expand search), model their (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 their perceptions problem ) OR ( in python python python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( coder coder their perceptions problem ) OR ( in python python python programming ))*.