Perhaps you should try some spelling variations:
"using computational 3d computational program" » "and computational 3d computational program" (Expand search), "using computacional 3d computational program" (Expand search), "using computational and computational program" (Expand search), "using computational _ computational program" (Expand search), "using computational cfd computational program" (Expand search)
"using codigo python python programming" » "using codigo pythons python programming" (Expand search), "using codigo piton python programming" (Expand search), "using codigo pitons python programming" (Expand search), "using indigo python python programming" (Expand search), "using coding python python programming" (Expand search), "using codium 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: (("using computational 3d computational program") OR ("using codigo python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computational 3d computational program\") OR (\"using codigo python python programming\"))".
• Removing quotes may allow a broader search: (( using computational 3d computational program ) OR ( using codigo python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computational 3d computational program") OR ("using codigo python python programming"))*.