Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan van len slippers" » "pham van len slippers", "thanh van len slippers", "luan van len slippers", "phan van lien slippers", "phan van le slippers", "phan van den slippers", "phan van len slippery", "phan van len grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("phan van len slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan van len slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan van len slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan van len slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.