Perhaps you should try some spelling variations:
ngang thanh » nganh thanh, ngan thanh, nhanh thanh
theo chieu » ho chieu, theo chu, thi chieu
nang thanh » dang thanh, tang thanh, nhanh thanh
cong cong » cong dong, trong cong, dung cong
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan

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 (theo tieu)) tinh - anh tang cua cong cong ((ngang thanh) OR (nang thanh)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo tieu)) tinh - anh tang cua cong cong ((ngang thanh) OR (nang thanh)) cau~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) tinh - anh tang cua cong cong ((ngang thanh) OR (nang thanh)) cau*.