Perhaps you should try some spelling variations:
"advanced computational and computer program" » "and computational and computer program" (Expand search), "based computational and computer program" (Expand search), "advanced computational fluid computer program" (Expand search), "advanced computational _ computer program" (Expand search)
"using computational based sample of" » "and computational based sample of" (Expand search), "using computational bases sample of" (Expand search), "using computacional bases sample of" (Expand search), "using computational basis sample of" (Expand search), "using computational and sample of" (Expand search)

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