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