Perhaps you should try some spelling variations:
"based computation using cad program" » "based computational using cad program" (Expand search), "based competition using cad program" (Expand search), "based compilation using cad program" (Expand search), "based computations using cad program" (Expand search), "based computation in cad program" (Expand search), "based composition using cad program" (Expand search), "based computation using cad programa" (Expand search), "based computation using cd program" (Expand search), "based computation using ced program" (Expand search), "based computation using cfd program" (Expand search), "based computation using c program" (Expand search)
"using using python python programming" » "using using pythons python programming" (Expand search), "using using piton python programming" (Expand search), "using using pitons python programming" (Expand search), "using usando python python programming" (Expand search), "using in python python programming" (Expand search), "using fusing python python programming" (Expand search), "housing using python python programming" (Expand search), "nursing using python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

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