Perhaps you should try some spelling variations:
"advanced simulation from complex program" » "advanced modulation from complex program" (Expand search), "advanced calculation from complex program" (Expand search), "advanced simulation from simplex program" (Expand search), "advanced simulation from complex programmes" (Expand search), "advanced simulation from complex prograded" (Expand search)
"based computational grids computing program" » "and computational grids computing program" (Expand search), "by computational grids computing program" (Expand search), "based computational and computing program" (Expand search), "based computational design computing program" (Expand search), "based computational grids consulting program" (Expand search), "based computational grids computer program" (Expand search), "based computational grids computador program" (Expand search), "based computational grid computing program" (Expand search), "based computational green computing program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced simulation from complex program\") OR (\"based computational grids computing program\"))~".
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