Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
quan nhung » qua nhung, cua nhung, luan chung
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
tinh tang » tinh trang, tinh sang, tinh bang
tang quan » tang luan, nang quan, tong quan
dan than » dan chan, ban than, van than

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: hoc thieu xanh - tinh tang quan nhung cong ((dan than) OR (tan tran)) cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - tinh tang quan nhung cong ((dan than) or (tan tran)) cau*.