Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
hieu cach » hieu cac, chieu sach, hieu ca
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
trung va » truong va, trang va, trung ha
cong tan » cong tac, cong san, cong thanh
tan hanh » tan thanh, tang hanh, toan hanh
hanh cha » hanh cham, thanh cha, hanh cua
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 cach) or (hieu lang)) - hanh trung va dung cong tan hanh cha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu cach) OR (hieu lang)) - hanh trung va dung cong tan hanh cha*.