Perhaps you should try some spelling variations:
"advanced computation using reference array" » "advanced computations using reference array" (Expand search), "advanced computational using reference array" (Expand search), "advance computational using reference array" (Expand search), "advanced computation in reference array" (Expand search), "advanced composition using reference array" (Expand search), "advanced computation using reference area" (Expand search), "advanced computation using reference areas" (Expand search), "advanced computation using reference cardiac" (Expand search)
"using using python python programming" » "using using pythons python programming" (Expand search), "using using piton python programming" (Expand search), "using using pitons python programming" (Expand search), "using usando python python programming" (Expand search), "using in python python programming" (Expand search), "using fusing python python programming" (Expand search), "housing using python python programming" (Expand search), "nursing 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: (("advanced computation using reference array") OR ("using using python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced computation using reference array\") OR (\"using using python python programming\"))*".
• Removing quotes may allow a broader search: (( advanced computation using reference array ) OR ( using using python python programming ))*.