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)
"advanced simulation guided computer program" » "advanced calculation guided computer program" (Expand search), "advanced simulation aided computer program" (Expand search), "advanced simulation video computer program" (Expand search), "advanced isolation guided computer program" (Expand search), "advanced simulation guioes computer program" (Expand search), "advanced simulation fixed 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 (\"advanced simulation guided computer program\"))~".
• Removing quotes may allow a broader search: (( advanced modulation and computer program ) OR ( advanced simulation guided computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced modulation and computer program") OR ("advanced simulation guided computer program"))*.