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