Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh chau » thanh cha, thanh cham, thanh chu
thanh cau » thanh mau, nhanh cau, thanh ca
ho chieu » hoc thieu, doi chieu, mot chieu
tranh va » tranh van, trang va, trinh va
va trong » va truong, va thong, va tuong
cong van » cong vang, cong san, song van

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)) xanh - canh tranh va trong cong van ((thanh cau) OR (thanh chau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) xanh - canh tranh va trong cong van ((thanh cau) OR (thanh chau))~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) xanh - canh tranh va trong cong van ((thanh cau) OR (thanh chau))*.