Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
tranh cua » doanh cua, manh cua
cong cong » cong dong, trong cong, dung cong
tran tuan » tran xuan, tran thanh, tranh luan
ho chieu » hoc thieu, doi chieu, mot chieu
cong tac » cong ty
quang » quan

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 chieu) OR (ho chieu)) sach - canh tranh cua cong cong tac ((tran tuan) OR (tran quang))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sach - canh tranh cua cong cong tac ((tran tuan) or (tran quang))~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sach - canh tranh cua cong cong tac ((tran tuan) or (tran quang))*.