Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
thanh van » thanh san, thanh toan, thanh phan
doc hieu » toc thieu, hoc thieu, hoc hien
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu lang - hanh tang cua nhung ((cong dan) or (cong tan)) thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu lang - hanh tang cua nhung ((cong dan) OR (cong tan)) thanh van.
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - hanh tang cua nhung ((cong dan) or (cong tan)) thanh van*.