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