Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
chieu sang » chieu sach, chieu xanh, nhieu tang
hanh huong » thanh huong, anh huong, manh huong
cong thanh » dong thanh, cong trinh, cong tan
thanh tran » thanh trang, thanh toan, thanh tra
hieu lang » nhieu tang, hieu van, biet lang
huong cua » dung cua
hang cong » dang cong, hang nong, bang cong
cua hang » cua dang, cua nhung, cua cong
tran cau » tran chau, toan cau, ran cau

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: ho ((chieu sang) OR (((hieu lang) OR (hieu quang)))) - hanh huong cua hang cong thanh tran cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (((hieu lang) OR (hieu quang)))) - hanh huong cua hang cong thanh tran cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (((hieu lang) OR (hieu quang)))) - hanh huong cua hang cong thanh tran cau*.