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