Perhaps you should try some spelling variations:
trung cuong » trung uong, trung duong, trong chuong
thanh tranh » thanh thanh, thanh tran, thanh trang
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cua trung » cua truong, xuan trung, cua nhung
cuong tap » luong tap, cong tac, luong tai
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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: ho hieu lang - thanh tranh cua trung cuong tap ((toan ban) OR (toan tap))~.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh tranh cua trung cuong tap ((toan ban) or (toan tap))*.