Perhaps you should try some spelling variations:
doanh hoan » doanh doanh, doanh khoa, doanh nhan
chua dong » ha dong, huy dong, hoa dong
doc hieu » toc thieu, hoc thieu
cua dong » cua cong, cua dang, cua nong
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
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) or (hoc hien)) sang - doanh hoan ((cua dong) OR (chua dong)) cong ban than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) sang - doanh hoan ((cua dong) OR (chua dong)) cong ban than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (hoc hien)) sang - doanh hoan ((cua dong) OR (chua dong)) cong ban than cau".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc hien)) sang - doanh hoan ((cua dong) OR (chua dong)) cong ban than cau*.