Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh van » trinh han, trinh quan, trinh toan
trinh va » trinh vat, trinh ve, trinh vi
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh 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: cho ((hieu manh) OR (chieu sach)) - hanh ((trinh va) OR (trinh van)) nhung cong dan toan cau~.
• Adding a wildcard symbol may retrieve word variants: cho ((hieu manh) or (chieu sach)) - hanh ((trinh va) or (trinh van)) nhung cong dan toan cau*.