Perhaps you should try some spelling variations:
"using imputation in detecting problem" » "using imputation in detection problem" (Expand search), "using imputation in detecting probe" (Expand search), "using imputation in testing problem" (Expand search), "using mutation in detecting problem" (Expand search), "testing imputation in detecting problem" (Expand search), "using computational in detecting problem" (Expand search), "using imputation of detecting problem" (Expand search), "using implantation in detecting problem" (Expand search), "using imputation _ detecting problem" (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: "((\"using imputation in detecting problem\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( using imputation in detecting problem ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using imputation in detecting problem") OR ("using coding python python programming"))*.