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