Perhaps you should try some spelling variations:
chieu sang » chieu xanh, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
nhung cong » dung cong, thong cong, hang cong
cong doanh » cong danh, cong doan, dong doanh
doanh quan » doanh quang, doanh luan, doan quan
hieu lang » hieu quang, nhieu tang, hieu van
hanh hang » thanh hang, hang hang, hanh han
quan cau » quang cao, toan cau, quan ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((chieu sang) or (chieu sach))) or (hieu lang)) - hanh hang va nhung cong doanh quan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sang) OR (chieu sach))) OR (hieu lang)) - hanh hang va nhung cong doanh quan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu sang) or (chieu sach))) or (hieu lang)) - hanh hang va nhung cong doanh quan cau*.