Perhaps you should try some spelling variations:
"and computation in diffusion process" » "and computation in diffusion processes" (Expand search), "and computational in diffusion process" (Expand search), "of computation in diffusion process" (Expand search), "and computation and diffusion process" (Expand search), "and computation of diffusion process" (Expand search), "and imputation in diffusion process" (Expand search), "and computation on diffusion process" (Expand search), "and computation _ diffusion process" (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("and computation in diffusion process") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computation in diffusion process\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( and computation in diffusion process ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("and computation in diffusion process") OR ("using coding python python programming"))*.