Perhaps you should try some spelling variations:
"and functionalities and coverage problem" » "and functionality and coverage problem" (Expand search), "and functionalization and coverage problem" (Expand search), "and functionalism and coverage problem" (Expand search), "and functionalities in coverage problem" (Expand search), "and functionalities of coverage problem" (Expand search), "and functionalities and covering problem" (Expand search), "and functionalities and covering problems" (Expand search), "and functionalities and coverage from" (Expand search), "and functionalities and cover 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.

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