Perhaps you should try some spelling variations:
"using computational and computer program" » "and computational and computer program" (Expand search), "using computational fluid computer program" (Expand search), "using computational _ computer program" (Expand search)
"using coding _ python programming" » "using coping _ python programming" (Expand search), "using coating _ python programming" (Expand search), "using cooking _ 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 and computer program") OR ("using coding _ python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computational and computer program\") OR (\"using coding _ python programming\"))".
• Removing quotes may allow a broader search: (( using computational and computer program ) OR ( using coding _ python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computational and computer program") OR ("using coding _ python programming"))*.