Perhaps you should try some spelling variations:
"advanced simulation and computer program" » "advanced calculation and computer program" (Expand search), "advanced simulation _ computer program" (Expand search)
"advanced modulation sections computer program" » "advanced calculation sections computer program" (Expand search), "advanced oxidation sections computer program" (Expand search), "advanced modulation decisions computer program" (Expand search), "advanced modulation functions computer program" (Expand search), "advanced modulation second computer program" (Expand search), "advanced modulation section computed program" (Expand search), "advanced modulation solutions computer program" (Expand search), "advanced modulation detection computer 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 and computer program") OR ("advanced modulation sections computer program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced simulation and computer program\") OR (\"advanced modulation sections computer program\"))".
• Removing quotes may allow a broader search: (( advanced simulation and computer program ) OR ( advanced modulation sections computer program )).
• Adding a wildcard symbol may retrieve word variants: (("advanced simulation and computer program") OR ("advanced modulation sections computer program"))*.