Perhaps you should try some spelling variations:
doanh hoan » doanh doanh, doanh khoa, doanh nhan
dung khoa » dung cho
tan dung » tran dung, tin dung, van dung
luan ket » lien ket
han dieu » nhan dieu, than dieu, lan dieu
ket han » ket van, ket doan, viet han
thien » thieu, tien, hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: tan dung khoa luan ket han dieu tri (kinh or dinh) doanh hoan thien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tan dung khoa luan ket han dieu tri (kinh OR dinh) doanh hoan thien.
• Adding a wildcard symbol may retrieve word variants: tan dung khoa luan ket han dieu tri (kinh or dinh) doanh hoan thien*.