Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung nam de snippets" » "dong nam de snippets", "dung lam de snippets", "sung nam de snippets", "dung nam da snippets", "dung nam do snippets", "dung nam he 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 nam de 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 nam de snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung nam de snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung nam de snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.