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)
"advanced simulation usando computador program" » "advanced calculation usando computador program" (Expand search), "advanced simulation usando computador programas" (Expand search), "advanced simulation usando computador programacao" (Expand search), "advanced simulation usando computador protecao" (Expand search), "advanced simulation and computador program" (Expand search), "advanced simulation using computador program" (Expand search), "advanced simulacao usando computador program" (Expand search), "advanced simulation usando computadores program" (Expand search), "advanced simulation usuario computador program" (Expand search), "advanced simulation humano computador 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 (\"advanced simulation usando computador program\"))~".
• Removing quotes may allow a broader search: (( advanced modulation in computer program ) OR ( advanced simulation usando computador program ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced modulation in computer program") OR ("advanced simulation usando computador program"))*.