Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
thanh phan » thanh pho, thanh san, thanh toan
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
hoc hieu » hoc thieu, hoc hien, doc hieu
ban hanh » ban hang
hanh cay » nhanh cay, hanh cac, hanh cat

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 thanh phan ((thong cong) or (dung cong)) ban hanh cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - doanh thanh phan ((thong cong) OR (dung cong)) ban hanh cay.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - doanh thanh phan ((thong cong) or (dung cong)) ban hanh cay*.