Perhaps you should try some spelling variations:
"_ computational in string problem" » "_ computational and string problem" (Expand search), "_ computational _ string problem" (Expand search), "_ computational 3d string problem" (Expand search), "_ computational in sizing problem" (Expand search), "_ computational in rostering problem" (Expand search), "_ computational in sharing problems" (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: (("_ computational in string problem") OR ("using python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"_ computational in string problem\") OR (\"using python python python programming\"))".
• Removing quotes may allow a broader search: (( _ computational in string problem ) OR ( using python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("_ computational in string problem") OR ("using python python python programming"))*.