Perhaps you should try some spelling variations:
"dung vaen code snippets" » "dung van code snippets", "dung vien code snippets", "dung va code snippets"
"nang viet code snippets" » "anh viet code snippets", "nang viet co snippets", "nang viet some snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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

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