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