Perhaps you should try some spelling variations:
methodology problems » methodology problem (Expand search), methodology process (Expand search), methodological problems (Expand search)
notion surface » cotton surface (Expand search), function surface (Expand search), position surface (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
coder notion » coder solution (Expand search)
on python » in python (Expand search), of python (Expand search), _ python (Expand search)
using on » using of (Expand search), using open (Expand search), using only (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 notion surface methodology problems ) OR ( using on python python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( coder notion surface methodology problems ) OR ( using on python python programming ))*.