Perhaps you should try some spelling variations:
"advanced calculation in computer program" » "advanced glycation in computer program" (Expand search), "advanced calculation of computer program" (Expand search), "advanced calculation _ computer program" (Expand search), "advanced calculations and computer program" (Expand search)
"dft calculations _ computing program" » "dft calculations _ consulting program" (Expand search), "dft calculations _ computador program" (Expand search), "dft calculations _ computer programs" (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"dft calculations _ computing program\") OR (\"advanced calculation in computer program\"))~".
• Removing quotes may allow a broader search: (( dft calculations _ computing program ) OR ( advanced calculation in computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("dft calculations _ computing program") OR ("advanced calculation in computer program"))*.