Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
cong quang » luong quang, thong quang, duong quang
quang tuan » quang thanh, quan luan, quang cua
kinh doan » kinh doanh, thinh doan, kinh hoang
minh doan » minh doanh, minh toan, minh don
tuan ban » tuan bang, toan ban, luan ban

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 sach) OR (chieu tinh)) - ((kinh doan) OR (minh doan)) va nhung cong quang tuan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chieu tinh)) - ((kinh doan) OR (minh doan)) va nhung cong quang tuan ban~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu tinh)) - ((kinh doan) OR (minh doan)) va nhung cong quang tuan ban*.