Perhaps you should try some spelling variations:
"nguyen can minh chi" » "nguyen van minh chi", "nguyen xuan minh chi", "nguyen cong minh chi", "nguyen cao minh chi", "nguyen ban minh chi", "nguyen can dinh chi", "nguyen can linh chi", "nguyen can minh chau"
"nguyen nhu minh khai" » "nguyen thi minh khai", "nguyen huy minh khai", "nguyen tu minh khai", "nguyen nhu minh khue", "nguyen nhu minh chau", "nguyen nhu minh pham", "nguyen thu minh khai", "nguyen nhu binh khai", "nguyen phu minh khai"
"nguyen huu minh khai" » "nguyen duc minh khai", "nguyen huu minh khue", "nguyen huu minh chau", "nguyen huu minh pham", "nguyen huu dinh khai", "nguyen huu manh khai", "nguyen huu binh khai"

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 chi") or ((("nguyen nhu minh khai") OR ("nguyen huu minh khai"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("nguyen can minh chi") OR ((("nguyen nhu minh khai") OR ("nguyen huu minh khai")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nguyen can minh chi\") or (((\"nguyen nhu minh khai\") OR (\"nguyen huu minh khai\"))))".
• Removing quotes may allow a broader search: (( nguyen can minh chi ) or ((( nguyen nhu minh khai ) OR ( nguyen huu minh khai )))).
• Adding a wildcard symbol may retrieve word variants: (("nguyen can minh chi") or ((("nguyen nhu minh khai") OR ("nguyen huu minh khai"))))*.