Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trang va » tran van, hang va
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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: hoc ((chieu xanh) OR (((hieu lang) OR (chieu sach)))) - hanh trang va nhung cong tan van ban~.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (((hieu lang) or (chieu sach)))) - hanh trang va nhung cong tan van ban*.