Perhaps you should try some spelling variations:
duong duong » tuong duong, cuong duong, dong duong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
tuan duong » tuyen duong, tuong duong, van duong
duong tan » duong tuan, duong van, duong tai
thanh cac » hanh cac, thanh bac, thanh ca
khan cap » khan ap, than cap, khoan cam

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 sach - ((thanh trung) OR (thanh tung)) tuan duong duong tan ((khan cap) OR (thanh cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((thanh trung) OR (thanh tung)) tuan duong duong tan ((khan cap) or (thanh cac))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((thanh trung) OR (thanh tung)) tuan duong duong tan ((khan cap) or (thanh cac))*.