Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan le toan snippets" » "tan ke toan snippets", "tan le doan snippets", "tan le tuan snippets", "tang le toan snippets", "tuan le toan snippets", "tan lee toan snippets"
"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: (((("tan le toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tan le toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan le toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan le toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.