Perhaps you should try some spelling variations:
"based computational model computer program" » "and computational model computer program" (Expand search), "by computational model computer program" (Expand search), "based computational modeling computer program" (Expand search), "based computational vhdl computer program" (Expand search)
"using codes from python programming" » "using code from python programming" (Expand search), "using anodes from python programming" (Expand search), "using cone from python programming" (Expand search), "using codes from pathogen programming" (Expand search), "using codes from anthony programming" (Expand search), "using cestodes from 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: "((\"based computational model computer program\") OR (\"using codes from python programming\"))~".
• Removing quotes may allow a broader search: (( based computational model computer program ) OR ( using codes from python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("based computational model computer program") OR ("using codes from python programming"))*.