Perhaps you should try some spelling variations:
"dung viet data snippets" » "nang viet data snippets", "cong viet data snippets", "mang viet data snippets", "dung viet dat snippets", "dung viet ta snippets", "dung lieu data snippets", "dung viet data slippers"
"dung sinh java snippets" » "duong sinh java snippets", "dang sinh java snippets", "dung ninh java snippets", "dung trinh java snippets", "dung using java snippets", "dung sinh va snippets", "dung sinh 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: (((("dung viet data snippets") or ("dung sinh java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung viet data snippets") OR ("dung sinh java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung viet data snippets ) or ( dung sinh java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung viet data snippets") or ("dung sinh java snippets"))) or ("locating bug code snippets"))*.