Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
tang cua » mang cua, hang cua, tang luan
cong tan » cong tac, cong san, cong ty
tran cau » tran chau, toan cau, tra cau
ran cau » van cau, ban cau, can cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh tang cua nhung ((cong tan) or (cong thanh)) ((tran cau) or (ran cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tang cua nhung ((cong tan) OR (cong thanh)) ((tran cau) OR (ran cau)).
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tang cua nhung ((cong tan) or (cong thanh)) ((tran cau) or (ran cau))*.