Perhaps you should try some spelling variations:
"nguyen xuan kinh thuy" » "nguyen van kinh thuy", "nguyen xuan dinh thuy", "nguyen qua kinh thuy", "nguyen than kinh thuy", "nguyen xuan kinh thuc", "nguyen xuan trinh thuy"
"nguyen xuan minh thuy" » "nguyen van minh thuy", "nguyen xuan dinh thuy", "nguyen quang minh thuy", "nguyen xuan minh thu", "nguyen xuan minh khue"
"nguyen thi minh khoe" » "nguyen thi minh khue", "nguyen thi minh khoi", "nguyen thi minh hoa", "nguyen chi minh khoe", "nguyen thi hanh khoe", "nguyen thi bich khoe"

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

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