Perhaps you should try some spelling variations:
"danh nhan cay snippets" » "doanh nhan cay snippets", "thanh nhan cay snippets", "benh nhan cay snippets", "danh nhanh cay snippets", "danh nham cay snippets", "danh nhan cach 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: (((("danh nhan cay snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh nhan cay snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh nhan cay snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh nhan cay snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.