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 amputation from python programming" » "using imputation from python programming" (Expand search), "using mutation from python programming" (Expand search), "using reputation from python programming" (Expand search), "using amputation of python programming" (Expand search), "using adaptation from python programming" (Expand search), "using amputation from pathogen programming" (Expand search), "using amputation from anthony 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 amputation from python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computational and computer program\") OR (\"using amputation from python programming\"))".
• Removing quotes may allow a broader search: (( using computational and computer program ) OR ( using amputation from python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computational and computer program") OR ("using amputation from python programming"))*.