Perhaps you should try some spelling variations:
"using computational in computer program" » "and computational in computer program" (Expand search), "using computational and computer program" (Expand search), "using computational _ computer program" (Expand search), "using computational 3d computer program" (Expand search)
"using imputation from python programming" » "using mutation from python programming" (Expand search), "testing imputation from python programming" (Expand search), "using indentation from python programming" (Expand search), "using amputation from python programming" (Expand search), "using computation from python programming" (Expand search), "using imputation from pathogen programming" (Expand search), "using imputation 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 in computer program") OR ("using imputation from python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computational in computer program\") OR (\"using imputation from python programming\"))".
• Removing quotes may allow a broader search: (( using computational in computer program ) OR ( using imputation from python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computational in computer program") OR ("using imputation from python programming"))*.