Perhaps you should try some spelling variations:
"using computational in computer program" » "and computational in computer program" (Expand search), "using computational and computer program" (Expand search), "using computational _ computer program" (Expand search), "using computational 3d computer program" (Expand search)
"dft calculation in computing program" » "dft calculation in consulting program" (Expand search), "dft calculation in computador program" (Expand search), "dft calculation in computer programs" (Expand search), "dft calculations in computing program" (Expand search), "cost calculation in computing program" (Expand search), "_ calculation in computing program" (Expand search), "dft calculation of computing program" (Expand search), "dft calculation _ computing program" (Expand search), "dft calculations and computing program" (Expand search), "dft calculation and 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 calculation in computing program") OR ("using computational in computer program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"dft calculation in computing program\") OR (\"using computational in computer program\"))*".
• Removing quotes may allow a broader search: (( dft calculation in computing program ) OR ( using computational in computer program ))*.