Perhaps you should try some spelling variations:
"advanced simulation and computer program" » "advanced modulation and computer program" (Expand search), "advanced calculation and computer program" (Expand search), "advanced simulation _ computer program" (Expand search)
"advanced simulation from computer programs" » "advanced modulation from computer programs" (Expand search), "advanced calculation from computer programs" (Expand search), "advanced simulation scrum computer programs" (Expand search), "advanced simulation from complex programs" (Expand search), "advanced simulation beam computer programs" (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 and computer program") OR ("advanced simulation from computer programs"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced simulation and computer program\") OR (\"advanced simulation from computer programs\"))".
• Removing quotes may allow a broader search: (( advanced simulation and computer program ) OR ( advanced simulation from computer programs )).
• Adding a wildcard symbol may retrieve word variants: (("advanced simulation and computer program") OR ("advanced simulation from computer programs"))*.