Perhaps you should try some spelling variations:
"by computational code diffusion problem" » "by computational model diffusion problem" (Expand search), "by computational cost diffusion problem" (Expand search), "by computational models diffusion problem" (Expand search), "by computational code diffusion process" (Expand search), "_ computational code diffusion problem" (Expand search), "and computational code diffusion problem" (Expand search), "by computational node diffusion problem" (Expand search), "by computational co diffusion problem" (Expand search), "by computational co2 diffusion problem" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking python python programming" (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: "((\"by computational code diffusion problem\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( by computational code diffusion problem ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("by computational code diffusion problem") OR ("using coding python python programming"))*.