Perhaps you should try some spelling variations:
"advanced modulation and computer program" » "advanced calculation and computer program" (Expand search), "advanced oxidation and computer program" (Expand search), "advanced modulation in computer program" (Expand search), "advanced modulation of computer program" (Expand search), "advanced modulation _ computer program" (Expand search)
"based computational in computer program" » "and computational in computer program" (Expand search), "by computational in computer program" (Expand search), "based computational and computer program" (Expand search), "based computational _ computer program" (Expand search), "based computational 3d computer 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 and computer program\") OR (\"based computational in computer program\"))~".
• Removing quotes may allow a broader search: (( advanced modulation and computer program ) OR ( based computational in computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced modulation and computer program") OR ("based computational in computer program"))*.