Perhaps you should try some spelling variations:
"nguyen hai minh chau" » "nguyen thi minh chau", "nguyen van minh chau", "nguyen can minh chau", "nguyen hai tinh chat", "nguyen khai minh chau", "nguyen thai minh chau", "nguyen hai linh chau"
"nguyen huu minh thi" » "nguyen duc minh thi", "nguyen huu manh thi", "nguyen huu binh thi", "nguyen huu hinh thi", "nguyen huu minh thu", "nguyen huu minh tri", "nguyen huu minh chi"
"nguyen huu dinh thi" » "nguyen duc dinh thi", "nguyen quy dinh thi", "nguyen vu dinh thi", "nguyen huu hanh thi", "nguyen huu dinh tri"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nguyen huu minh thi") OR ("nguyen huu dinh thi"))) or ("nguyen hai minh chau"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nguyen huu minh thi") OR ("nguyen huu dinh thi"))) OR ("nguyen hai minh chau"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"nguyen huu minh thi\") OR (\"nguyen huu dinh thi\"))) or (\"nguyen hai minh chau\"))*".
• Removing quotes may allow a broader search: (((( nguyen huu minh thi ) OR ( nguyen huu dinh thi ))) or ( nguyen hai minh chau ))*.