Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
trung tuan » trung thanh, trung tam, tran tuan
hieu lang » hieu quang, nhieu tang, hieu van
tuan dung » tuan duong, tran dung, tan dung
dung dong » dung cong, vung dong, dung trong
do thai » do thi, toc thai
da thai » dao thai, ca thai, a thai

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)) - thanh trung tuan dung dong ((do thai) OR (da thai)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (hieu lang)) - thanh trung tuan dung dong ((do thai) or (da thai)) cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (hieu lang)) - thanh trung tuan dung dong ((do thai) or (da thai)) cau*.