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)
"advanced validity based computing program" » "advanced facility based computing program" (Expand search), "advanced quality based computing program" (Expand search), "advanced validity based consulting program" (Expand search), "advanced validity based computador program" (Expand search), "advanced validity based computer programs" (Expand search), "advanced validity based costing program" (Expand search), "advanced validity and computing program" (Expand search), "advanced validity based coating program" (Expand search), "advanced solidarity based 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 (\"advanced validity based computing program\"))~".
• Removing quotes may allow a broader search: (( advanced computation and computer program ) OR ( advanced validity based computing program ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced computation and computer program") OR ("advanced validity based computing program"))*.