Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
chieu tinh » lieu tinh, chau tinh, kieu tinh
dung cong » dung trong
cong vanh » cong vinh, cong danh, cong vang
doanh va » doan va, doanh tai, doanh cua
tuan ban » tuan bang, luan ban, quang ban
toan ban » van ban
va dung » van dung, va duong, vat dung

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (trieu tinh)) - doanh doanh va dung cong vanh ((tuan ban) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) or (trieu tinh)) - doanh doanh va dung cong vanh ((tuan ban) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (trieu tinh)) - doanh doanh va dung cong vanh ((tuan ban) OR (toan ban))*.