Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
danh thuong » doanh thuong, anh thuong, dinh thuong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tran » hanh trang, thanh tran, hanh tram
tran danh » tran dinh, tran manh, tran anh
thanh hoa » thanh pho
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 - hanh tran danh thuong cong ((tinh toan) or (thanh hoa)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh tran danh thuong cong ((tinh toan) OR (thanh hoa)) cau*.