Perhaps you should try some spelling variations:
"based impression in concurrent programming" » "based impression in constraint programming" (Expand search), "based expression in concurrent programming" (Expand search), "based regression in concurrent programming" (Expand search), "and impression in concurrent programming" (Expand search), "based impressions in concurrent programming" (Expand search), "based compression in concurrent programming" (Expand search), "based impressions on concurrent programming" (Expand search), "based impression and concurrent programming" (Expand search), "based impression of concurrent programming" (Expand search), "based impression _ concurrent programming" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking 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: "((\"based impression in concurrent programming\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( based impression in concurrent programming ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("based impression in concurrent programming") OR ("using coding python python programming"))*.