Perhaps you should try some spelling variations:
"testing imputation using computer programming" » "testing imputation using computer program" (Expand search), "testing imputation using computer programs" (Expand search), "testing education using computer programming" (Expand search), "testing situation using computer programming" (Expand search), "testing computation using computer programming" (Expand search), "testing computations using computer programming" (Expand search), "testing imputation in computer programming" (Expand search)
"using code from python programming" » "using code from pathogen programming" (Expand search), "using code from anthony programming" (Expand search), "using cone from python programming" (Expand search), "using co from python programming" (Expand search), "using co2 from python programming" (Expand search), "using code form 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: "((\"testing imputation using computer programming\") OR (\"using code from python programming\"))~".
• Removing quotes may allow a broader search: (( testing imputation using computer programming ) OR ( using code from python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("testing imputation using computer programming") OR ("using code from python programming"))*.