Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thanh dung » thanh duong, thanh tung, thanh hung
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
thanh cac » hanh cac, thanh ca, tranh cac
thanh bac » nhanh bac, thanh bai, thanh san
dung cua » dung luan, dung cho
cong tan » cong tac, cong san, cong thanh

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: doi ((chieu sach) OR (chiet tach)) - thanh dung cua thong cong tan ((thanh cac) OR (thanh bac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) OR (chiet tach)) - thanh dung cua thong cong tan ((thanh cac) or (thanh bac))~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) OR (chiet tach)) - thanh dung cua thong cong tan ((thanh cac) or (thanh bac))*.