Perhaps you should try some spelling variations:
"advanced duplication in computer program" » "advanced application in computer program" (Expand search), "advanced applications in computer program" (Expand search), "advanced glication in computer program" (Expand search), "advanced replication in computer program" (Expand search), "advanced implication in computer program" (Expand search), "advanced duplication _ computer program" (Expand search)
"using computational and computing program" » "and computational and computing program" (Expand search), "using computational fluid computing program" (Expand search), "using computational and consulting program" (Expand search), "using computational and computador program" (Expand search), "using computational and computer programs" (Expand search), "using computational grid computing program" (Expand search), "using computational fog computing program" (Expand search), "using computational and computer program" (Expand search)

You may be able to get more results by adjusting your search query.

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