Perhaps you should try some spelling variations:
diffusion problem » diffusion process (Expand search)
coding diffusion » using diffusion (Expand search), sodium diffusion (Expand search), combining diffusion (Expand search)
python coding » action coding (Expand search), python code (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
using python » usando python (Expand search), in python (Expand search)

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

• Removing quotes may allow a broader search: (( codigo python coding diffusion problem ) OR ( using python python python programming ))~.