Perhaps you should try some spelling variations:
"trinh dat anh snippets" » "trinh vat anh snippets", "trinh da anh snippets", "trinh dan anh snippets", "trinh sat anh snippets", "trinh dat khanh snippets", "trinh nhat anh snippets", "trinh dat anh slippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug code slippers", "dung bug core snippets"
"locating bug code snippets" » "locating bug code slippers", "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: (((("trinh dat anh snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh dat anh snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh dat anh snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh dat anh snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.