Perhaps you should try some spelling variations:
"using computational modeling simulation program" » "and computational modeling simulation program" (Expand search), "using computational modeling stimulation program" (Expand search), "using computational modeling education program" (Expand search), "using computational modeling immunization 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("using computational modeling simulation program") OR ("using code from python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computational modeling simulation program\") OR (\"using code from python programming\"))".
• Removing quotes may allow a broader search: (( using computational modeling simulation program ) OR ( using code from python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computational modeling simulation program") OR ("using code from python programming"))*.