Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
thanh tung » thanh cong
chong cong » cong cong, thong cong, cuong cong
hien danh » thien danh, hien hanh, hien khanh
cua chong » cua cong, cua chung, cua khong
tung cua » trung cua, tuong cua, dung cua
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cap » khan cap, thanh lap, thanh cac

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

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