Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
chieu sang » chieu sach, chieu xanh, hieu lang
dung cong » dung trong
ban thanh » ban hanh, ban hang
thanh cha » thanh ha, thanh nha, thanh phan
hieu cac » hieu luc, hieu va, hieu van
trung va » truong va, trang va, trung ha
cong ban » cong bang, cong san, cong tan
va dung » van dung, va duong, vat dung

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

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