Perhaps you should try some spelling variations:
thieu khang » chieu khong
thieu quang » hieu quang, thien quan, trien quang
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh cua » doanh luan
cua trong » cua truong, cua trung, qua trong
cong tan » cong tac, cong san, cong thanh
tan hang » tan khang, ban hang, van hang

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: hoc ((thieu khang) OR (thieu quang)) - canh doanh cua trong cong tan hang va~.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu khang) or (thieu quang)) - canh doanh cua trong cong tan hang va*.