Perhaps you should try some spelling variations:
thien chanh » thien thanh, hien hanh, tien thanh
thien chinh » tien thinh, thien chien, thi chinh
thanh trung » thanh tung
thong cong » trong cong, tong cong, thong thong
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
tien anh » tieng anh, tien manh, dien anh
cong ban » cong bang, cong san, cong tan
ban khan » ban than, ban nhan, ban chan
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((thien chanh) OR (thien chinh))) or (tien anh)) - thanh trung cua thong cong ban khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thien chanh) OR (thien chinh))) OR (tien anh)) - thanh trung cua thong cong ban khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((thien chanh) OR (thien chinh))) or (tien anh)) - thanh trung cua thong cong ban khan cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((((thien chanh) OR (thien chinh))) or (tien anh)) - thanh trung cua thong cong ban khan cap*.