Perhaps you should try some spelling variations:
"using computational and ddr program" » "and computational and ddr program" (Expand search), "using computational fluid ddr program" (Expand search), "using computational and r program" (Expand search), "using computational and ladder program" (Expand search), "using computational and year program" (Expand search), "using computational and hddr program" (Expand search), "using computational and ddt program" (Expand search), "using computational and dd program" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ 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: "((\"using computational and ddr program\") OR (\"in python python python programming\"))~".
• Removing quotes may allow a broader search: (( using computational and ddr program ) OR ( in python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computational and ddr program") OR ("in python python python programming"))*.