Perhaps you should try some spelling variations:
"nguyen can dinh chi" » "nguyen van dinh chi", "nguyen xuan dinh chi", "nguyen cong dinh chi", "nguyen cac dinh chi", "nguyen can dinh thi", "nguyen can dinh tri", "nguyen can dinh moi"
"nguyen chi minh chau" » "nguyen thi minh chau", "nguyen nhu minh chau", "nguyen hai minh chau", "nguyen chi tinh chat"
"nguyen tu minh chau" » "nguyen tuan minh chau", "nguyen thi minh chau", "nguyen duc minh chau", "nguyen tu tinh chat", "nguyen thu minh chau", "nguyen vu 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 dinh chi") or ((("nguyen tu minh chau") or ("nguyen chi minh chau"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("nguyen can dinh chi") OR ((("nguyen tu minh chau") OR ("nguyen chi minh chau"))))*.
• Removing quotes may allow a broader search: (( nguyen can dinh chi ) or ((( nguyen tu minh chau ) or ( nguyen chi minh chau ))))*.