Perhaps you should try some spelling variations:
"using function root coverage on" » "using functional root coverage on" (Expand search), "using friction root coverage on" (Expand search), "guiding function root coverage on" (Expand search), "using function roots coverage on" (Expand search), "using function role coverage on" (Expand search), "using function roc coverage on" (Expand search), "using function root coverage of" (Expand search), "using function root coverage in" (Expand search), "using function root coverage and" (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("using function root coverage on") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using function root coverage on\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( using function root coverage on ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using function root coverage on") OR ("using coding python python programming"))*.