Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu quang » thieu quang, hieu quan, hieu qua
nhung cong » dung cong, thong cong, hang cong
thanh chau » thanh cha, thanh cham, thanh chu
hanh tang » hanh trang, anh tang, hanh mang
cong dan » cong san, cong tan, huong dan
phan dau » phan tu, hang dau
tang va » trang va, tang van, thang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (hieu quang)) - hanh tang va nhung cong dan ((thanh chau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu quang)) - hanh tang va nhung cong dan ((thanh chau) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu quang)) - hanh tang va nhung cong dan ((thanh chau) or (phan dau))*.