Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
trung cap » truong cao, trung tam
tran tuan » tran xuan, tran quang, tran thanh
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - thanh ((trung cap) or (tran tuan)) thuong cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - thanh ((trung cap) OR (tran tuan)) thuong cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - thanh ((trung cap) or (tran tuan)) thuong cong dan than cau*.