Perhaps you should try some spelling variations:
doanh phan » doanh nhan, doan phan, doanh thanh
phan quang » pham quang, phan quan, nhanh quang
nhung cong » dung cong, thong cong, nhung don
hieu lang » chieu sang, hieu quang, nhieu tang
hang cong » dang cong, hang nong, bang cong
ban nhanh » ban hanh, ban thanh, ban nhan
doc hieu » toc thieu, hoc thieu, hoc hien
nhanh ha » thanh hoa, thanh hai, khanh hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu lang - doanh phan quang ((nhung cong) or (hang cong)) ban nhanh ha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu lang - doanh phan quang ((nhung cong) OR (hang cong)) ban nhanh ha*.