Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
chieu sach » chinh sach, chiet tach, chieu sang
hieu lang » chieu sang, hieu quang, nhieu tang
doanh cua » doanh luan
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
van tuan » van ban, anh tuan
van quan » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (chieu sach)) - doanh doanh cua bang cong ((van tuan) OR (van quan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chieu sach)) - doanh doanh cua bang cong ((van tuan) OR (van quan)) cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (chieu sach)) - doanh doanh cua bang cong ((van tuan) OR (van quan)) cao*".