Perhaps you should try some spelling variations:
thien danh » thien anh, thien thanh, thien chanh
thien dang » thien bang, thien nang, thien cong
hang doanh » hanh doanh, nhung doanh, van doanh
nhan dang » nhan dan, phan dang, tran dang
dang cong » dung cong
cong san » cong tac
pham ca » pham can, pham ma, pham va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien danh) or (thien dang)) - hang doanh nhan dang cong san pham ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (thien dang)) - hang doanh nhan dang cong san pham ca.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) or (thien dang)) - hang doanh nhan dang cong san pham ca*.