Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, truong thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
tran tuan » tran xuan, tran quang, tran thanh
ban cong » bang cong, van cong, phan cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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: theo ((hieu manh) OR (hieu lang)) - manh ((trung tuan) OR (tran tuan)) ban cong tac toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (hieu lang)) - manh ((trung tuan) OR (tran tuan)) ban cong tac toan cao~".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (hieu lang)) - manh ((trung tuan) OR (tran tuan)) ban cong tac toan cao*.