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