Perhaps you should try some spelling variations:
cong thuong » hang thuong
thuong dan » huong dan, thuong han, thuong dam
hoi hieu » hoi phieu, hoi tieu, moi hieu
anh nang » ganh nang, anh bang, anh dang
nang duc » nang luc, nang doc, nang du
duc cong » duc cuong, nuoc cong, chuc cong
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu
co hieu » cao hieu, doc hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((co hieu) or (hoi hieu)) lang - anh nang duc cong thuong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((co hieu) OR (hoi hieu)) lang - anh nang duc cong thuong dan phan cau.
• Adding a wildcard symbol may retrieve word variants: ((co hieu) or (hoi hieu)) lang - anh nang duc cong thuong dan phan cau*.