Perhaps you should try some spelling variations:
"nguyen nhat minh thao" » "nguyen vat minh thao", "nguyen nhu minh thao", "nguyen hai minh thao", "nguyen pham minh thao", "nguyen nha kinh thao", "nguyen nhan sinh thao", "nguyen nhat minh thanh", "nguyen nhat sinh thai", "nguyen nhat minh giao"
"nguyen chi minh khai" » "nguyen thi minh khai", "nguyen can minh khai", "nguyen nhu minh khai", "nguyen chi minh khue", "nguyen chi minh chau", "nguyen chi minh pham"
"nguyen thu minh chi" » "nguyen thi minh chi", "nguyen nhu minh chi", "nguyen tu minh chi", "nguyen vu minh chi", "nguyen thu dinh chi", "nguyen thu linh chi", "nguyen thu minh chau"

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

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