Perhaps you should try some spelling variations:
"based computation using class problem" » "based computational using class problem" (Expand search), "based competition using class problem" (Expand search), "based compilation using class problem" (Expand search), "based computations using class problem" (Expand search), "based computation in class problem" (Expand search), "based composition using class problem" (Expand search), "based computation using class problems" (Expand search), "based computation using glass problem" (Expand search), "based computation using mass problem" (Expand search), "based computation ruling class 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based computation using class problem\") OR (\"using python python python programming\"))~".
• Removing quotes may allow a broader search: (( based computation using class problem ) OR ( using python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("based computation using class problem") OR ("using python python python programming"))*.