Perhaps you should try some spelling variations:
"advanced calculation and computer program" » "advanced glycation and computer program" (Expand search), "advanced calculations and computer program" (Expand search), "advanced calculation in computer program" (Expand search), "advanced calculation of computer program" (Expand search), "advanced calculation _ computer program" (Expand search)
"advanced simulation study compared program" » "advanced modulation study compared program" (Expand search), "advanced simulation study company program" (Expand search), "advanced simulation study compete program" (Expand search), "advanced simulation study complex program" (Expand search), "advanced simulation study comparing program" (Expand search), "advanced simulation study comparison 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 calculation and computer program") OR ("advanced simulation study compared program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced calculation and computer program\") OR (\"advanced simulation study compared program\"))".
• Removing quotes may allow a broader search: (( advanced calculation and computer program ) OR ( advanced simulation study compared program )).
• Adding a wildcard symbol may retrieve word variants: (("advanced calculation and computer program") OR ("advanced simulation study compared program"))*.