Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
thuong cong » thong cong, thuong con, thuong dong
hieu lang » chieu sang, hieu quang, nhieu tang
tuong va » truong va, thuong va, luong va
cong dan » cong san, cong tan, huong dan
dan can » dan chan, dan canh, dan ca
can cau » van cau, ban cau, ca cau

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 ((dieu hanh) OR (hieu lang)) - thanh tuong va thuong cong dan can cau~.
• Adding a wildcard symbol may retrieve word variants: ho ((dieu hanh) or (hieu lang)) - thanh tuong va thuong cong dan can cau*.