Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
manh tung » manh hung, thanh tung
cua nhung » va nhung
thanh lap » thanh san, phan lap, thanh hai
tung cua » trung cua, tuong cua, dung cua
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh cac, than cua

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 hien xanh - manh tung cua nhung ((cong dan) OR (cong tan)) ((than cap) OR (thanh lap))~.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - manh tung cua nhung ((cong dan) or (cong tan)) ((than cap) or (thanh lap))*.