Perhaps you should try some spelling variations:
"based computational and computer program" » "and computational and computer program" (Expand search), "by computational and computer program" (Expand search), "based computational fluid computer program" (Expand search), "based computational _ computer program" (Expand search)
"using computational code computing program" » "and computational code computing program" (Expand search), "using computational model computing program" (Expand search), "using computational cost computing program" (Expand search), "using computational models computing program" (Expand search), "using computational code consulting program" (Expand search), "using computational code computador program" (Expand search), "using computational code computer programs" (Expand search), "using computational modern computing 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 code computing program") OR ("based computational and computer program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computational code computing program\") OR (\"based computational and computer program\"))*".
• Removing quotes may allow a broader search: (( using computational code computing program ) OR ( based computational and computer program ))*.