Perhaps you should try some spelling variations:
"nguyen chi minh khai" » "nguyen thi minh khai", "nguyen can minh khai", "nguyen hai minh khai", "nguyen chi minh khue", "nguyen chi minh chau", "nguyen chi minh chi"
"nguyen nhu minh pham" » "nguyen thi minh pham", "nguyen huu minh pham", "nguyen huy minh pham", "nguyen nhu minh chau", "nguyen nhu dinh phap", "nguyen nhu minh thao", "nguyen thu minh pham", "nguyen phu minh pham", "nguyen nhat minh pham"
"nguyen nhu binh chi" » "nguyen thi binh chi", "nguyen huu binh chi", "nguyen huy binh chi", "nguyen thu binh chi", "nguyen thuy binh chi", "nguyen khau binh chi", "nguyen nhu dinh chi", "nguyen nhu linh chi", "nguyen nhu minh chi"

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 nhu minh pham") or ("nguyen nhu binh chi"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("nguyen chi minh khai") OR ((("nguyen nhu minh pham") OR ("nguyen nhu binh chi")))).
• Removing quotes may allow a broader search: (( nguyen chi minh khai ) or ((( nguyen nhu minh pham ) or ( nguyen nhu binh chi )))).
• Adding a wildcard symbol may retrieve word variants: (("nguyen chi minh khai") or ((("nguyen nhu minh pham") or ("nguyen nhu binh chi"))))*.