Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien nhanh » hien hanh, thien thanh, tien thanh
trung qua » trung quan, trong qua, trung cua
qua dung » quang dung, su dung, qua song
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
chan cap » khan cap, cao cap, phan cac
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 nhanh - thanh trung qua dung ((cong dan) or (cong san)) ((chan cap) OR (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - thanh trung qua dung ((cong dan) OR (cong san)) ((chan cap) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - thanh trung qua dung ((cong dan) or (cong san)) ((chan cap) OR (than cap))".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - thanh trung qua dung ((cong dan) or (cong san)) ((chan cap) OR (than cap))*.