Perhaps you should try some spelling variations:
doanh thua » doanh thu, doanh thuc, doanh khoa
luan trien » luan thiet, luan tieu, tuan tien
thua thien » thuc hien
quan tren » quan trong, quang tran, quan tri
nhan kinh » than kinh, nha kinh, nhan sinh
ban dung » van dung, dan dung, tan dung
cho luan » khoa luan, khao luan, cho phan
luan ket » lien ket

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "ban dung cho luan ket ((luan trien) OR (quan tren)) nhan kinh doanh thua thien~".
• Adding a wildcard symbol may retrieve word variants: ban dung cho luan ket ((luan trien) OR (quan tren)) nhan kinh doanh thua thien*.