Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
tran tuan » tran xuan, tran quang, tran thanh
doc hieu » toc thieu, hoc thieu, hoc hien
ban hanh » ban hang
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
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: doc hieu xanh - thanh ((tran tuan) or (ban hanh)) hang ((cong ban) or (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh ((tran tuan) OR (ban hanh)) hang ((cong ban) OR (cong san)) than cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh ((tran tuan) or (ban hanh)) hang ((cong ban) or (cong san)) than cau*.