Perhaps you should try some spelling variations:
"trinh do code snippets" » "trinh ky code snippets", "trinh do core snippets"
"dung san de snippets" » "dong san de snippets", "dung sai de snippets", "dung luan de snippets", "dung van de snippets", "dung dan de snippets", "dung jan de snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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: (((("trinh do code snippets") or ("dung san de snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh do code snippets") OR ("dung san de snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh do code snippets ) or ( dung san de snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh do code snippets") or ("dung san de snippets"))) or ("locating bug code snippets"))*.