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)
"by computational grid computing program" » "by computational grids computing program" (Expand search), "by computational and computing program" (Expand search), "by computational art computing program" (Expand search), "by computational grid consulting program" (Expand search), "by computational grid computador program" (Expand search), "by computational grid computer programs" (Expand search), "_ computational grid computing program" (Expand search), "and computational grid computing program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced computation and computer program\") OR (\"by computational grid computing program\"))~".
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