Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
doanh chung » doanh nhung, doanh thuong, doan hung
chung dung » nhung dung, cung dung, phung dung
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
ban nhanh » ban hanh, ban thanh, ban nhan
nhanh cay » nhanh ha, nhanh bac, nhanh va
hoc hieu » hoc thieu, hoc hien, doc hieu
cong ban » cong bang, cong san, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - doanh doanh chung dung cong ban nhanh cay~.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - doanh doanh chung dung cong ban nhanh cay*.