Perhaps you should try some spelling variations:
"duong dung code snippets" » "cuong dung code snippets", "dung dung code snippets", "duong dang code snippets", "duong dung cong snippets", "duong dung co snippets", "duong dung de snippets", "duong dung code slippers"
"tran anh java snippets" » "tran manh java snippets", "tuan anh java snippets", "tran thanh java snippets", "tran anh va snippets", "tran anh java 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: (((("tran anh java snippets") or ("duong dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran anh java snippets") OR ("duong dung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran anh java snippets ) or ( duong dung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran anh java snippets") or ("duong dung code snippets"))) or ("locating bug code snippets"))*.