Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung dao den snippets" » "duong dao den snippets", "dung dat den snippets", "dong dao den snippets", "dung dao dan snippets", "dung dan den snippets", "dung day den 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: (((("dung dao den snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung dao den snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung dao den snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dao den snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.