Perhaps you should try some spelling variations:
"dung duoc noi snippets" » "dong duoc noi snippets", "cung duoc noi snippets", "dung quoc noi snippets", "dung duoc hoi snippets", "dung duoc moi snippets", "dung duong noi snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "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 duoc noi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung duoc noi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung duoc noi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung duoc noi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.