Perhaps you should try some spelling variations:
"and computation using change problem" » "and computations using change problem" (Expand search), "and computation in change problem" (Expand search), "and composition using change problem" (Expand search), "and computational using change problem" (Expand search), "of computation using change problem" (Expand search), "and computation using exchange problem" (Expand search), "and computation using change program" (Expand search), "and computation using change prone" (Expand search), "and computation using changes problem" (Expand search), "and computation using charge problem" (Expand search), "and computation using charged problem" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python 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 change problem") OR ("using python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computation using change problem\") OR (\"using python python python programming\"))".
• Removing quotes may allow a broader search: (( and computation using change problem ) OR ( using python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("and computation using change problem") OR ("using python python python programming"))*.