Perhaps you should try some spelling variations:
ngang nhanh » nang thanh, nhan nhanh, nganh thanh
cong ngang » cong nhan, cong quang, cong lang
doi chieu » doc hieu, doi chi, mot chieu
tuan dong » tuan duong, quan dong, luan dong
dong cong » duong cong, dung cong, dang cong
nhanh cau » nhanh cay, thanh chau, nhanh ha
ho chieu » theo chieu, hoc thieu, mot chieu

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: ((doi chieu) OR (ho chieu)) sach - ((thanh tung) OR (thanh cong)) tuan dong cong ngang nhanh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (ho chieu)) sach - ((thanh tung) or (thanh cong)) tuan dong cong ngang nhanh cau~".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (ho chieu)) sach - ((thanh tung) or (thanh cong)) tuan dong cong ngang nhanh cau*.