Perhaps you should try some spelling variations:
"advanced calculations of computer program" » "advanced calculation of computer program" (Expand search), "advanced computations of computer program" (Expand search), "advanced evaluations of computer program" (Expand search)
"advanced simulation code computing program" » "advanced modulation code computing program" (Expand search), "advanced calculation code computing program" (Expand search), "advanced simulation code consulting program" (Expand search), "advanced simulation code computador program" (Expand search), "advanced simulation code computer programs" (Expand search), "advanced simulation model computing program" (Expand search), "advanced simulation case computing program" (Expand search), "advanced simulation models computing program" (Expand search), "advanced simulation modern computing program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced calculations of computer program\") OR (\"advanced simulation code computing program\"))~".
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