Perhaps you should try some spelling variations:
"based computation using diffusion program" » "based computational using diffusion program" (Expand search), "based competition using diffusion program" (Expand search), "based compilation using diffusion program" (Expand search), "based computations using diffusion program" (Expand search), "based computation in diffusion program" (Expand search), "based composition using diffusion program" (Expand search), "based computation using diffusion problem" (Expand search), "based computation using diffusion problems" (Expand search), "based computation using diffusion process" (Expand search)
"using model python python programming" » "using model pythons python programming" (Expand search), "using model piton python programming" (Expand search), "using model pitons python programming" (Expand search), "using modulo python python programming" (Expand search), "using monty python python programming" (Expand search), "using tool python python programming" (Expand search), "ising model python python programming" (Expand search), "using modis python python programming" (Expand search), "using mobile python python programming" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based computation using diffusion program\") OR (\"using model python python programming\"))~".
• Removing quotes may allow a broader search: (( based computation using diffusion program ) OR ( using model python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("based computation using diffusion program") OR ("using model python python programming"))*.