Perhaps you should try some spelling variations:
"by computation testing concurrent program" » "by computation teaching concurrent program" (Expand search), "by computation stepping concurrent program" (Expand search), "by mutation testing concurrent program" (Expand search), "by computation test concurrent program" (Expand search), "by computation testing current program" (Expand search), "by computation during concurrent program" (Expand search), "by computation testing concurrent programs" (Expand search), "by computation testing concurrent programming" (Expand search), "by computational testing concurrent program" (Expand search), "of computation testing concurrent program" (Expand search), "_ computation testing concurrent program" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python python python programming" (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"by computation testing concurrent program\") OR (\"using python python python programming\"))~".
• Removing quotes may allow a broader search: (( by computation testing concurrent program ) OR ( using python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("by computation testing concurrent program") OR ("using python python python programming"))*.