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