Perhaps you should try some spelling variations:
"coder an approximation algorithm using" » "coder an approximation algorithms using" (Expand search), "coder an approximation algorithm in" (Expand search), "code an approximation algorithm using" (Expand search), "codes an approximation algorithm using" (Expand search), "poder an approximation algorithm using" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ 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: (("coder an approximation algorithm using") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder an approximation algorithm using\") OR (\"in python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder an approximation algorithm using ) OR ( in python python python programming ))*.