Perhaps you should try some spelling variations:
cong thuong » hang thuong
thuong dan » huong dan, thuong han, thuong dam
nhan dang » nhan dan, phan dang, tran dang
dang cong » dung cong
doi chi » doi khi
dan van » dang van, doan van, dao van
van tan » van tuan, van ban, van tai
tan ca » tan cua, tang ca, dan ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chi) or (toc thieu)) tinh - nhan dang cong thuong dan van tan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (toc thieu)) tinh - nhan dang cong thuong dan van tan ca.
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (toc thieu)) tinh - nhan dang cong thuong dan van tan ca*.