Perhaps you should try some spelling variations:
"and computational using reverse problem" » "and computation using reverse problem" (Expand search), "and computations using reverse problem" (Expand search), "and computacional usinas reverse problem" (Expand search), "_ computational using reverse problem" (Expand search), "and computational using reversal problem" (Expand search), "and computational using inverse problem" (Expand search), "and computational using release problem" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python 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: "((\"and computational using reverse problem\") OR (\"using python python python programming\"))~".
• Removing quotes may allow a broader search: (( and computational using reverse problem ) OR ( using python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computational using reverse problem") OR ("using python python python programming"))*.