Perhaps you should try some spelling variations:
"using functions from coverage problem" » "using functions from covering problem" (Expand search), "using functions from covering problems" (Expand search), "using functions from coverage from" (Expand search), "using functional from coverage problem" (Expand search), "ing functions from coverage problem" (Expand search), "testing functions from coverage problem" (Expand search), "using functions flow coverage problem" (Expand search), "using functions crop coverage problem" (Expand search), "using functions from beverage 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: (("using functions from coverage problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using functions from coverage problem\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( using functions from coverage problem ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using functions from coverage problem") OR ("using coding python python programming"))*.