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