Perhaps you should try some spelling variations:
thanh trung » thanh tung
vien nganh » vien thanh
trung tuan » trung thanh, trung tam, tran tuan
tuan thong » toan thong, tran thong, tuan phong
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (vien nganh)) - thanh trung tuan thong cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (vien nganh)) - thanh trung tuan thong cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (vien nganh)) - thanh trung tuan thong cong dan chan cau*.