Perhaps you should try some spelling variations:
"code computation using diffusion problems" » "code computation using diffusion problem" (Expand search), "code computation using diffusion process" (Expand search), "code computations using diffusion problems" (Expand search), "code computation in diffusion problems" (Expand search), "code composition using diffusion problems" (Expand search), "core computation using diffusion problems" (Expand search), "code computational using diffusion problems" (Expand search), "pose computation using diffusion problems" (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: "((\"code computation using diffusion problems\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( code computation using diffusion problems ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("code computation using diffusion problems") OR ("using coding python python programming"))*.