Perhaps you should try some spelling variations:
long thanh » luong thanh, long han, long trinh
ying juan » jiang juan, ying jin, feng juan
juan meng » juan rene, jui meng, yuan ming
meng yang » wang yang, yang yang, dong yang
hong than » hong tan, hong hai
yang thi » dang thi, yang chik, yang di
yang xi » yang di, yang yi, yang jui

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: (((lang OR wing) yan) OR (yang xi)) ying juan meng yang thi ((hong than) OR (long thanh)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((lang or wing) yan) or (yang xi)) ying juan meng yang thi ((hong than) OR (long thanh)) ;~".
• Adding a wildcard symbol may retrieve word variants: (((lang or wing) yan) or (yang xi)) ying juan meng yang thi ((hong than) OR (long thanh)) ;*.