Perhaps you should try some spelling variations:
"using computational and computer program" » "and computational and computer program" (Expand search), "using computational fluid computer program" (Expand search), "using computational _ computer program" (Expand search)
"dft calculations in computing program" » "dft calculations in consulting program" (Expand search), "dft calculations in computador program" (Expand search), "dft calculations in computer programs" (Expand search), "dft calculation in computing program" (Expand search), "dft calculations and computing program" (Expand search), "dft calculations of computing program" (Expand search), "dft calculations _ 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: (("dft calculations in computing program") OR ("using computational and computer program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"dft calculations in computing program\") OR (\"using computational and computer program\"))".
• Removing quotes may allow a broader search: (( dft calculations in computing program ) OR ( using computational and computer program )).
• Adding a wildcard symbol may retrieve word variants: (("dft calculations in computing program") OR ("using computational and computer program"))*.