Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, hien hanh
tung tuan » trung tuan, hung tuan, quang tuan
tuan dung » tuan duong, tran dung, tan dung
dung cong » dung trong
cong tac » cong ty
thanh ca » thanh cha, thanh cac, thanh ha
phan cau » phan dau, phan cac, phan tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - thanh tung tuan dung cong tac ((thanh ca) OR (phan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (dieu hanh)) - thanh tung tuan dung cong tac ((thanh ca) or (phan cau))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (dieu hanh)) - thanh tung tuan dung cong tac ((thanh ca) or (phan cau))*.