Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
chong cong » cong cong, thong cong, cuong cong
hien danh » thien danh, hien hanh, hien khanh
trung cua » truong cua, trung tuan, trung cap
tung cua » tuong cua, dung cua, tang 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) OR (trung 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) OR (trung cua)) chong cong tan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien danh) or (hien nhanh)) - thanh ((tung cua) OR (trung cua)) chong cong tan than cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien danh) or (hien nhanh)) - thanh ((tung cua) OR (trung cua)) chong cong tan than cap*.