Perhaps you should try some spelling variations:
thanh trung » thanh tung
trinh trang » tinh trang, trinh trong, trinh trung
trang tuan » tran tuan, trung tuan, trong tuan
hieu lang » chieu sang, hieu quang, nhieu tang
dang cong » dung cong
van dang » van dong, van dung, van nang
ho hieu » ho chieu, hoi hieu, nho hieu

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 - ((thanh trung) or (thanh cong)) van dang cong trinh trang tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((thanh trung) OR (thanh cong)) van dang cong trinh trang tuan.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((thanh trung) or (thanh cong)) van dang cong trinh trang tuan*.