Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
chieu sach » chinh sach, chiet tach, chieu sang
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
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: hoc ((chieu sach) OR (hieu lang)) - hanh trung cua nhung ((cong tan) OR (cong tac)) toan cao~.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (hieu lang)) - hanh trung cua nhung ((cong tan) or (cong tac)) toan cao*.