Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien nhanh » hien hanh, thien thanh, tien thanh
hien danh » thien danh, hien hanh, hien khanh
trung cua » truong cua, trung tuan, trung cap
cua chong » cua cong, cua chung, cua khong
cong tang » cong thang, cong lang, cong vang
thanh cap » thanh lap, hanh cap, than cap
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 ((hien danh) or (hien nhanh)) - thanh trung cua chong ((cong tang) OR (cong tan)) thanh cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien danh) OR (hien nhanh)) - thanh trung cua chong ((cong tang) OR (cong tan)) thanh cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien danh) or (hien nhanh)) - thanh trung cua chong ((cong tang) OR (cong tan)) thanh cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien danh) or (hien nhanh)) - thanh trung cua chong ((cong tang) OR (cong tan)) thanh cap*.