Perhaps you should try some spelling variations:
"advanced computation using diffusion problem" » "advanced computations using diffusion problem" (Expand search), "advanced computational using diffusion problem" (Expand search), "advance computational using diffusion problem" (Expand search), "advanced computation in diffusion problem" (Expand search), "advanced composition using diffusion problem" (Expand search), "advanced computation using diffusion process" (Expand search)
"using codigo python python programming" » "using codigo pythons python programming" (Expand search), "using codigo piton python programming" (Expand search), "using codigo pitons python programming" (Expand search), "using indigo python python programming" (Expand search), "using coding python python programming" (Expand search), "using codium 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: "((\"advanced computation using diffusion problem\") OR (\"using codigo python python programming\"))~".
• Removing quotes may allow a broader search: (( advanced computation using diffusion problem ) OR ( using codigo python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced computation using diffusion problem") OR ("using codigo python python programming"))*.