Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
hien nhanh » hien hanh, thien thanh, tien thanh
doanh hoan » doanh doanh, doanh khoa, doanh nhan
hang cong » dang cong, hang nong, bang cong
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan cau » phan dau, phan cac, phan tu
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - ((doanh thanh) or (doanh hoan)) va hang cong tac phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - ((doanh thanh) OR (doanh hoan)) va hang cong tac phan cau*.