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)
"advanced modulation in computation program" » "advanced calculation in computation program" (Expand search), "advanced oxidation in computation program" (Expand search), "advanced modulation in computational program" (Expand search), "advanced modulation in computational programs" (Expand search), "advanced modulation in compensation program" (Expand search), "advanced modulation on computation program" (Expand search), "advanced modulation and computation program" (Expand search), "advanced modulation of computation program" (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: "((\"using computational and computer program\") OR (\"advanced modulation in computation program\"))~".
• Removing quotes may allow a broader search: (( using computational and computer program ) OR ( advanced modulation in computation program ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computational and computer program") OR ("advanced modulation in computation program"))*.