Perhaps you should try some spelling variations:
khien canh » thien chanh, bien canh, khia canh
hien nhanh » thien thanh, tien thanh, dien thanh
thanh tung » thanh cong
chong cong » cong cong, thong cong, cuong cong
hien hanh » dieu hanh
cua chong » cua cong, cua chung, cua khong
tan thanh » tran thanh, tang thanh, toan thanh
thanh cap » thanh lap, hanh cap, than cap
tung cua » trung cua, tuong cua, dung cua
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((khien canh) or (hien hanh))) or (hien nhanh)) - thanh tung cua chong cong tan thanh cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((khien canh) OR (hien hanh))) OR (hien nhanh)) - thanh tung cua chong cong tan thanh cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((((khien canh) or (hien hanh))) or (hien nhanh)) - thanh tung cua chong cong tan thanh cap*.