Perhaps you should try some spelling variations:
doanh hoan » doanh doanh, doanh khoa, doanh nhan
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoan luan » hoa luan, toan luan, han luan
luan hang » luan nang, luan han, luan hung
hang cong » dang cong, hang nong, bang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
dan toan » manh toan, xuan toan, dien toan
van toan » van tuan, van tan, van thanh
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - doanh hoan luan hang cong ((((dan toan) OR (van toan))) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - doanh hoan luan hang cong ((((dan toan) OR (van toan))) OR (dan than)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - doanh hoan luan hang cong ((((dan toan) OR (van toan))) or (dan than)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - doanh hoan luan hang cong ((((dan toan) OR (van toan))) or (dan than)) cau*.