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