Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
trung dap » trung cap, trung dai, trung dam
dung cong » dung trong
san thanh » ban thanh, van thanh, son thanh
thanh cha » thanh ha, thanh nha, thanh phan
hieu van » hieu va, thien van, lieu va
dap dung » ap dung, dan dung, dap ung
cong san » cong tac

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: toc ((hieu van) OR (chieu sach)) - hanh trung dap dung cong san thanh cha~.
• Adding a wildcard symbol may retrieve word variants: toc ((hieu van) or (chieu sach)) - hanh trung dap dung cong san thanh cha*.