Perhaps you should try some spelling variations:
"coder _ recursive algorithm in" » "coder _ recursive algorithms in" (Expand search), "coder _ recursive algorithm and" (Expand search), "coder _ recursive algorithm _" (Expand search), "coder _ recursive algorithm with" (Expand search)
"api pitoni python python programming" » "api pitons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pythons python python programming" (Expand search), "api pitoni pythons python programming" (Expand search), "api pitoni piton python programming" (Expand search), "api pitoni pitons 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 _ recursive algorithm in") OR ("api pitoni python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder _ recursive algorithm in\") OR (\"api pitoni python python programming\"))".
• Removing quotes may allow a broader search: (( coder _ recursive algorithm in ) OR ( api pitoni python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder _ recursive algorithm in") OR ("api pitoni python python programming"))*.