Perhaps you should try some spelling variations:
"based computational and computational program" » "by computational and computational program" (Expand search), "based computational fluid computational program" (Expand search), "based computational _ computational program" (Expand search)
"advanced simulation _ computing program" » "advanced modulation _ computing program" (Expand search), "advanced calculation _ computing program" (Expand search), "advanced simulation _ consulting program" (Expand search), "advanced simulation _ computer program" (Expand search), "advanced simulation _ computador program" (Expand search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("based computational and computational program") OR ("advanced simulation _ computing program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based computational and computational program\") OR (\"advanced simulation _ computing program\"))".
• Removing quotes may allow a broader search: (( based computational and computational program ) OR ( advanced simulation _ computing program )).
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