Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung sai den snippets" » "dung tai den snippets", "dung va den snippets", "dung dat den snippets", "dung thai den snippets", "dung mai dien snippets", "dung bai dien 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 sai 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 sai den snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung sai den snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung sai den snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.