Perhaps you should try some spelling variations:
"dung xuat cua snippets" » "dung xuan cua snippets", "dung luat cua snippets", "dung quat cua snippets", "dung xuat va snippets", "dung nhat cua snippets", "dung xuat bia snippets"
"dung java java snippets" » "dung va java 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 xuat cua 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 xuat cua snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung xuat cua snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung xuat cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.