Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan giay den snippets" » "dan gian den snippets", "dan giai den snippets", "dan giao den snippets", "dan giay van snippets", "dan day den snippets", "dan gia de snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

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