Perhaps you should try some spelling variations:
"danh nhanh cau snippets" » "danh nhan cau snippets", "danh thanh cau snippets", "doanh thanh cau snippets", "danh nhanh cay snippets", "danh thanh chau snippets", "danh nhanh ha 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 nhanh cau 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 nhanh cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh nhanh cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh nhanh cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.