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