Perhaps you should try some spelling variations:
"using computational and computation program" » "and computational and computation program" (Expand search), "using computational and computational program" (Expand search), "using computational and computational programs" (Expand search), "using computational and compensation program" (Expand search), "using computational fluid computation program" (Expand search), "using computational of computation program" (Expand search)
"advanced aplication and computer program" » "advanced application and computer program" (Expand search), "advanced applications and computer program" (Expand search), "advanced glication and computer program" (Expand search), "advanced replication and computer program" (Expand search), "advanced duplication and computer program" (Expand search), "advanced aplication _ computer program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computational and computation program\") OR (\"advanced aplication and computer program\"))~".
• Removing quotes may allow a broader search: (( using computational and computation program ) OR ( advanced aplication and computer program ))~.
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