Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"thong cau don snippets" » "thong cac don snippets", "thong cap don snippets", "thong tu don snippets", "thong cau dong snippets", "thong cau do snippets", "thong cau doi 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 java java snippets") or ("thong cau don snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("thong cau don snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( thong cau don snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("thong cau don snippets"))) or ("locating bug code snippets"))*.