Perhaps you should try some spelling variations:
"using computation and computer program" » "using computational and computer program" (Expand search), "using imputation and computer program" (Expand search), "using compilation and computer program" (Expand search), "using computation of computer program" (Expand search), "using computation _ computer program" (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: "((\"using computation and computer program\") OR (\"using code from python programming\"))~".
• Removing quotes may allow a broader search: (( using computation and computer program ) OR ( using code from python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computation and computer program") OR ("using code from python programming"))*.