Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
doanh quang » doan quang, doanh quan, doanh luan
nhung cong » thong cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
ban nhanh » ban hanh, ban thanh, ban nhan
doc hieu » toc thieu, hoc hien
nhanh va » hanh va, nhan va, nhanh ha

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) or (hoc thieu)) lang - doanh doanh quang ((nhung cong) OR (dung cong)) ban nhanh va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) lang - doanh doanh quang ((nhung cong) OR (dung cong)) ban nhanh va.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (hoc thieu)) lang - doanh doanh quang ((nhung cong) OR (dung cong)) ban nhanh va".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc thieu)) lang - doanh doanh quang ((nhung cong) OR (dung cong)) ban nhanh va*.