Perhaps you should try some spelling variations:
"code computation and coverage problem" » "core computation and coverage problem" (Expand search), "code computational and coverage problem" (Expand search), "pose computation and coverage problem" (Expand search), "code computation and covering problem" (Expand search), "code computation and covering problems" (Expand search), "code computation and coverage from" (Expand search), "code computation of coverage problem" (Expand search), "code computation and cover problem" (Expand search)
"using in python python programming" » "using in pythons python programming" (Expand search), "using in piton python programming" (Expand search), "using in pitons python programming" (Expand search), "using _ 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: "((\"code computation and coverage problem\") OR (\"using in python python programming\"))~".
• Removing quotes may allow a broader search: (( code computation and coverage problem ) OR ( using in python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("code computation and coverage problem") OR ("using in python python programming"))*.