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