Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien chanh » thien thanh, thien chinh, tien thanh
thong cong » trong cong, tong cong, thong thong
hien hanh » dieu hanh
tien manh » tien anh, tien thanh, tieng anh
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
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 (hien hanh))) or (tien manh)) - 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 (hien hanh))) OR (tien manh)) - 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 (hien hanh))) or (tien manh)) - thanh trung cua thong cong ban khan cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((((thien chanh) OR (hien hanh))) or (tien manh)) - thanh trung cua thong cong ban khan cap*.