Perhaps you should try some spelling variations:
"trinh anh dat snippets" » "trinh hanh dat snippets", "trinh thanh dat snippets", "trinh kinh dat snippets", "trinh lanh dao snippets", "trinh dinh dat snippets", "trinh anh dat slippers"
"dung luan code snippets" » "dung luan cong snippets", "dung luan che snippets", "dung luan de snippets", "dung luan code slippers"
"locating bug code snippets" » "locating bug code slippers", "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 anh dat snippets") or ("dung luan code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh anh dat snippets") OR ("dung luan code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh anh dat snippets ) or ( dung luan code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh anh dat snippets") or ("dung luan code snippets"))) or ("locating bug code snippets"))*.