Perhaps you should try some spelling variations:
thanh trang » thanh trung, thanh thang, thanh tran
hanh trang » thanh trung, canh tranh, hanh trinh
thong cong » trong cong, tong cong, thong thong
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
va thong » va thuong, va phuong, he thong
cong san » cong tac
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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: doc hieu xanh - ((thanh trang) OR (hanh trang)) va thong cong san ((than cap) OR (khan cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((thanh trang) OR (hanh trang)) va thong cong san ((than cap) or (khan cap))~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((thanh trang) OR (hanh trang)) va thong cong san ((than cap) or (khan cap))*.