Perhaps you should try some spelling variations:
methodology problems » methodology problem (Expand search), methodology process (Expand search), methodological problems (Expand search)
function surface » functional surface (Expand search), functional surfaces (Expand search), function subspace (Expand search)
coder function » modern function (Expand search), power function (Expand search), over function (Expand search)
coding pitons » loading pistons (Expand search)
using coding » using coping (Expand search), using coating (Expand search), using cooking (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( coder function surface methodology problems ) OR ( using coding pitons python programming ))~.