Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
ban thanh » ban hanh, ban hang
thanh cha » thanh ha, thanh nha, thanh phan
trung va » truong va, trang va, trung ha
va thong » va thuong, va phuong, he thong
cong ban » cong bang, cong san, cong tan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((chieu sach) or (hieu lang)) - hanh trung va thong cong ban thanh cha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((chieu sach) OR (hieu lang)) - hanh trung va thong cong ban thanh cha*.