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 encryption python computer program" » "advanced encryption method computer program" (Expand search), "advanced encryption methods computer program" (Expand search), "advanced encryption with 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 encryption python computer program") OR ("advanced simulation and computer program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced encryption python computer program\") OR (\"advanced simulation and computer program\"))*".
• Removing quotes may allow a broader search: (( advanced encryption python computer program ) OR ( advanced simulation and computer program ))*.