Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dan than cao snippets" » "dan chan cao snippets", "ban than cao snippets", "van than cao snippets", "dan toan cao snippets", "dan thai cao snippets", "dan 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: (((("dan 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: (((("dan than cao snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan than cao snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan than cao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.