Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"ban than cao snippets" » "ban thanh cao snippets", "van thanh cao snippets", "ban hang cao snippets", "ban toan cao snippets", "ban thai cao snippets", "ban than cap 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: (((("ban than cao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban than cao snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban than cao snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban than cao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.