Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
nhung cong » dung cong, thong cong, hang cong
chinh sua » chinh su, chinh cua, chinh luan
hinh cua » chinh cua, sinh cua, tinh cua
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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 (chiet tach)) - hanh ((hinh cua) OR (chinh sua)) nhung cong tan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chiet tach)) - hanh ((hinh cua) or (chinh sua)) nhung cong tan toan cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chiet tach)) - hanh ((hinh cua) or (chinh sua)) nhung cong tan toan cau*.