Perhaps you should try some spelling variations:
"and computation using relation error" » "and computations using relation error" (Expand search), "and computation in relation error" (Expand search), "and composition using relation error" (Expand search), "and computational using relation error" (Expand search), "of computation using relation error" (Expand search), "and computation using regulation error" (Expand search), "and computation using reaction error" (Expand search), "and computation using relative error" (Expand search), "and computation using replication error" (Expand search), "and computation using rotation errors" (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 computation using relation error\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( and computation using relation error ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computation using relation error") OR ("using coding python python programming"))*.