Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
cong nganh » cong ngang, duong nganh, cong thanh
thien anh » thien danh, tien anh, thien thanh
hanh tang » hanh trang, anh tang, hanh mang
tran chau » tranh chap, tran huu
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: hoc ((thieu xanh) OR (thien anh)) - hanh tang cua cong ((cong nganh) OR (trong nganh)) tran chau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien anh)) - hanh tang cua cong ((cong nganh) OR (trong nganh)) tran chau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - hanh tang cua cong ((cong nganh) OR (trong nganh)) tran chau*.