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