Perhaps you should try some spelling variations:
"using imputation python computer program" » "using imputation method computer program" (Expand search), "using imputation methods computer program" (Expand search), "using imputation with computer program" (Expand search), "using mutation python computer program" (Expand search), "testing imputation python computer program" (Expand search), "using computational python computer 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using imputation python computer program\") OR (\"using codigo python python programming\"))~".
• Removing quotes may allow a broader search: (( using imputation python computer program ) OR ( using codigo python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using imputation python computer program") OR ("using codigo python python programming"))*.