Perhaps you should try some spelling variations:
"tran doanh dat snippets" » "toan doanh dat snippets", "trai doanh dat snippets", "tran danh dat snippets", "tran doanh bat snippets", "tran doanh dao snippets", "tran doanh xuat snippets", "tran doanh dat slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "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: (((("tran doanh dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran doanh dat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran doanh dat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran doanh dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.