Perhaps you should try some spelling variations:
"and functionals in coverage problem" » "and functionals in covering problem" (Expand search), "and functionals in covering problems" (Expand search), "and functionals in coverage from" (Expand search), "and functional in coverage problem" (Expand search), "and functionalism in coverage problem" (Expand search), "and functionalist in coverage problem" (Expand search), "and functions in coverage problem" (Expand search), "and functionality in coverage problem" (Expand search), "and functional index coverage problem" (Expand search), "and functionals and coverage 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: "((\"and functionals in coverage problem\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( and functionals in coverage problem ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and functionals in coverage problem") OR ("using coding python python programming"))*.