Perhaps you should try some spelling variations:
nhuong cong » nhung cong, luong cong, duong cong
chieu sach » chinh sach, chiet tach, chieu sang
van nhuong » van chuong, van phuong, van huong
hanh dong » anh dong, ha dong
tran chau » tranh chap, tran huu
dong van » duong van, dang van, dong von
cong tan » cong tac, cong san, cong thanh
tran cau » toan cau, ran cau, tra cau

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: theo ((dieu hanh) OR (chieu sach)) - hanh dong van nhuong cong tan ((tran cau) OR (tran chau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((dieu hanh) or (chieu sach)) - hanh dong van nhuong cong tan ((tran cau) OR (tran chau))~".
• Adding a wildcard symbol may retrieve word variants: theo ((dieu hanh) or (chieu sach)) - hanh dong van nhuong cong tan ((tran cau) OR (tran chau))*.