Perhaps you should try some spelling variations:
"and computational python computer program" » "and computacional python computer program" (Expand search), "and computacional vpython computer program" (Expand search), "and computacionais python computer program" (Expand search), "_ computational python computer program" (Expand search)
"using computational model computing program" » "using computational modeling computing program" (Expand search), "using computational model consulting program" (Expand search), "using computational model computador program" (Expand search), "using computational model computer programs" (Expand search), "using computational models computing program" (Expand search), "using computational model comprising program" (Expand search), "using computational model computer program" (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 model computing program") OR ("and computational python computer program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computational model computing program\") OR (\"and computational python computer program\"))".
• Removing quotes may allow a broader search: (( using computational model computing program ) OR ( and computational python computer program )).
• Adding a wildcard symbol may retrieve word variants: (("using computational model computing program") OR ("and computational python computer program"))*.