Perhaps you should try some spelling variations:
"trinh dat hieu snippets" » "trinh vat hieu snippets", "trinh da hieu snippets", "trinh dan hieu snippets", "trinh dao hieu snippets", "trinh dat tieu snippets", "trinh rat nhieu snippets", "trinh dat hieu slippers"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets", "dung dung code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

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

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