Perhaps you should try some spelling variations:
"advanced computation and computer program" » "advanced computations and computer program" (Expand search), "advanced computational and computer program" (Expand search), "advance computational and computer program" (Expand search), "advanced computation of computer program" (Expand search), "advanced computation _ computer program" (Expand search)
"advanced simulation using computer program" » "advanced modulation using computer program" (Expand search), "advanced calculation using 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 using computer program") OR ("advanced computation and computer program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced simulation using computer program\") OR (\"advanced computation and computer program\"))*".
• Removing quotes may allow a broader search: (( advanced simulation using computer program ) OR ( advanced computation and computer program ))*.