Perhaps you should try some spelling variations:
"dung viet code snippets" » "nang viet code snippets", "cong viet code snippets", "mang viet code snippets", "dung viet co snippets", "dung viet some snippets", "dung viet code slippers"
"tong cua code snippets" » "thong cua code snippets", "trong cua code snippets", "tuong cua code snippets", "tong cua cong snippets", "tong cua co snippets", "tong cfd code snippets", "tong cua 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: (((("tong cua code snippets") or ("dung viet code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tong cua code snippets") OR ("dung viet code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tong cua code snippets ) or ( dung viet code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tong cua code snippets") or ("dung viet code snippets"))) or ("locating bug code snippets"))*.