Perhaps you should try some spelling variations:
"nguyen thi nhanh thanh" » "nguyen thi phan thanh", "nguyen thi nhanh tinh", "nguyen chi nhanh thanh", "nguyen thi khanh thanh", "nguyen ghi nhanh thanh"
"nguyen thi thanh khai" » "nguyen thi thanh hai", "nguyen thi than khai", "nguyen thi thanh phan", "nguyen thi tmanh khai", "nguyen thi tnhanh thai", "nguyen thi tthanh hai"
"nguyen thi hanh khai" » "nguyen thi manh khai", "nguyen thi nhanh thai", "nguyen thi thanh hai"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nguyen thi hanh khai") or ("nguyen thi nhanh thanh"))) or ("nguyen thi thanh khai"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nguyen thi hanh khai") OR ("nguyen thi nhanh thanh"))) OR ("nguyen thi thanh khai")).
• Removing quotes may allow a broader search: (((( nguyen thi hanh khai ) or ( nguyen thi nhanh thanh ))) or ( nguyen thi thanh khai )).
• Adding a wildcard symbol may retrieve word variants: (((("nguyen thi hanh khai") or ("nguyen thi nhanh thanh"))) or ("nguyen thi thanh khai"))*.