Perhaps you should try some spelling variations:
"advanced computations in computer program" » "advanced computational in computer program" (Expand search), "advance computational in computer program" (Expand search), "advanced communications in computer program" (Expand search), "advanced computation in computer program" (Expand search), "advanced computation of computer program" (Expand search), "advanced computation and computer program" (Expand search), "advanced computations _ computer program" (Expand search)
"advanced simulation from simplex program" » "advanced modulation from simplex program" (Expand search), "advanced calculation from simplex program" (Expand search), "advanced simulation from simples program" (Expand search), "advanced simulation from complex program" (Expand search), "advanced simulation from simple program" (Expand search), "advanced simulation from simpler program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced computations in computer program\") OR (\"advanced simulation from simplex program\"))~".
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