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 data computational program" » "advanced calculation data computational program" (Expand search), "advanced oxidation data computational program" (Expand search), "advanced modulation and computational program" (Expand search), "advanced modulation via computational program" (Expand search), "advanced modulation based computational program" (Expand search), "advanced population data computational program" (Expand search), "advanced modulation at computational program" (Expand search), "advanced modulation rate computational 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 data computational program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced simulation in computer program\") OR (\"advanced modulation data computational program\"))".
• Removing quotes may allow a broader search: (( advanced simulation in computer program ) OR ( advanced modulation data computational program )).
• Adding a wildcard symbol may retrieve word variants: (("advanced simulation in computer program") OR ("advanced modulation data computational program"))*.