Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan hang » luan nang, luan han, luan hung
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
than cau » toan cau, phan cau, than cap

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 luan hang ((cong san) or (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tang luan hang ((cong san) OR (cong tan)) than cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tang luan hang ((cong san) or (cong tan)) than cau*.