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