Perhaps you should try some spelling variations:
"and computation using several program" » "and computations using several program" (Expand search), "and computation in several program" (Expand search), "and composition using several program" (Expand search), "and computational using several program" (Expand search), "of computation using several program" (Expand search), "and computation using federal program" (Expand search), "and computation using federal programs" (Expand search), "and computation using federal programa" (Expand search), "and computation using spectral program" (Expand search), "and computation using reverse program" (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 computation using several program\") OR (\"using python python python programming\"))~".
• Removing quotes may allow a broader search: (( and computation using several program ) OR ( using python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computation using several program") OR ("using python python python programming"))*.