Perhaps you should try some spelling variations:
"advanced simulation in computer program" » "advanced calculation in computer program" (Expand search), "advanced simulation and computer program" (Expand search), "advanced simulation _ computer program" (Expand search)
"advanced modulation in computador program" » "advanced calculation in computador program" (Expand search), "advanced oxidation in computador program" (Expand search), "advanced modulation in computador programas" (Expand search), "advanced modulation in computador programacao" (Expand search), "advanced modulation in computador protecao" (Expand search), "advanced modulation of computador program" (Expand search), "advanced modulation mini computador program" (Expand search), "advanced modulation via computador program" (Expand search), "advanced modulation en computadora program" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("advanced simulation in computer program") OR ("advanced modulation in computador program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced simulation in computer program\") OR (\"advanced modulation in computador program\"))".
• Removing quotes may allow a broader search: (( advanced simulation in computer program ) OR ( advanced modulation in computador program )).
• Adding a wildcard symbol may retrieve word variants: (("advanced simulation in computer program") OR ("advanced modulation in computador program"))*.