Perhaps you should try some spelling variations:
"using computing using reference array" » "using competing using reference array" (Expand search), "mining computing using reference array" (Expand search), "using conducting using reference array" (Expand search), "using computing ufcg reference array" (Expand search), "using computing using reference area" (Expand search), "using computing using reference areas" (Expand search), "using computing 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 computing using reference array") OR ("using in python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computing using reference array\") OR (\"using in python python programming\"))".
• Removing quotes may allow a broader search: (( using computing using reference array ) OR ( using in python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computing using reference array") OR ("using in python python programming"))*.