Perhaps you should try some spelling variations:
doanh chuong » doanh thuong, doanh chung, doan phuong
thanh trung » thanh tung
trung doanh » trong doanh, trung thanh, dung doanh
chuong dong » chuong duong, phuong dong, huong dong
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
dong tinh » dong kinh, dong tin, cong tinh
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (chieu sang)) - thanh trung doanh chuong dong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chieu sang)) - thanh trung doanh chuong dong tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chieu sang)) - thanh trung doanh chuong dong tinh toan cao*.