Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung tieu chan snippets" » "dung hieu chan snippets", "dung tren chan snippets", "dung tin chan snippets", "dung tieu chuan snippets", "dung dieu chan snippets", "dung tieu nhan 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 java java snippets") or ("dung tieu chan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dung tieu chan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dung tieu chan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dung tieu chan snippets"))) or ("locating bug code snippets"))*.