Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
hang doanh » nhung doanh, van doanh, dung doanh
hanh doanh » chinh doanh, doanh doanh, kinh doanh
nang cong » nang song, dang cong, bang cong
van nang » van quang, van ban, van dong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 (chieu sach)) - ((hang doanh) OR (hanh doanh)) van nang cong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) or (chieu sach)) - ((hang doanh) OR (hanh doanh)) van nang cong dan than cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (chieu sach)) - ((hang doanh) OR (hanh doanh)) van nang cong dan than cau*.