Perhaps you should try some spelling variations:
"nguyen can minh khai" » "nguyen van minh khai", "nguyen xuan minh khai", "nguyen cong minh khai", "nguyen can minh khue", "nguyen can minh chi", "nguyen can minh thao", "nguyen cao minh khai", "nguyen ban minh khai"
"nguyen nhu minh pham" » "nguyen thi minh pham", "nguyen huu minh pham", "nguyen huy minh pham", "nguyen nhu dinh phap", "nguyen nhu minh thao", "nguyen thu minh pham", "nguyen nhu binh pham", "nguyen phu minh pham"
"nguyen nhu minh chau" » "nguyen thi minh chau", "nguyen huu minh chau", "nguyen huy minh chau", "nguyen nhu tinh chat", "nguyen thu minh chau", "nguyen nhu binh chau", "nguyen phu 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 can minh khai") or ((("nguyen nhu minh pham") or ("nguyen nhu minh chau"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("nguyen can minh khai") OR ((("nguyen nhu minh pham") OR ("nguyen nhu minh chau")))).
• Removing quotes may allow a broader search: (( nguyen can minh khai ) or ((( nguyen nhu minh pham ) or ( nguyen nhu minh chau )))).
• Adding a wildcard symbol may retrieve word variants: (("nguyen can minh khai") or ((("nguyen nhu minh pham") or ("nguyen nhu minh chau"))))*.