Perhaps you should try some spelling variations:
"and computation using external problem" » "and computations using external problem" (Expand search), "and computation in external problem" (Expand search), "and composition using external problem" (Expand search), "and computation using external problems" (Expand search), "and computation using internal problems" (Expand search), "and computation using extremal problem" (Expand search), "and computational using external problem" (Expand search), "of computation using external 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("and computation using external problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computation using external problem\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( and computation using external problem ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("and computation using external problem") OR ("using coding python python programming"))*.