Perhaps you should try some spelling variations:
"using computational using reference array" » "and computational using reference array" (Expand search), "using computation using reference array" (Expand search), "using computations using reference array" (Expand search), "using computacional usinas reference array" (Expand search), "using computational using reference area" (Expand search), "using computational using reference areas" (Expand search), "using computational using reference cardiac" (Expand search)
"using in python python programming" » "using in pythons python programming" (Expand search), "using in piton python programming" (Expand search), "using in pitons python programming" (Expand search), "using _ python python programming" (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 using reference array") OR ("using in python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computational using reference array\") OR (\"using in python python programming\"))".
• Removing quotes may allow a broader search: (( using computational using reference array ) OR ( using in python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computational using reference array") OR ("using in python python programming"))*.