Perhaps you should try some spelling variations:
"and computation using diffusion program" » "and computations using diffusion program" (Expand search), "and computation in diffusion program" (Expand search), "and composition using diffusion program" (Expand search), "and computation using diffusion problem" (Expand search), "and computation using diffusion problems" (Expand search), "and computation using diffusion process" (Expand search), "and computational using diffusion program" (Expand search), "of computation using diffusion program" (Expand search)
"using code from python programming" » "using code from pathogen programming" (Expand search), "using code from anthony programming" (Expand search), "using cone from python programming" (Expand search), "using co from python programming" (Expand search), "using co2 from python programming" (Expand search), "using code form 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: "((\"and computation using diffusion program\") OR (\"using code from python programming\"))~".
• Removing quotes may allow a broader search: (( and computation using diffusion program ) OR ( using code from python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computation using diffusion program") OR ("using code from python programming"))*.