Perhaps you should try some spelling variations:
doanh thua » doanh thu, doanh thuc, doanh cua
luan trien » luan thiet, luan tieu, quan tren
doanh khoa » toan khoa
dung khoa » dung cho
trien tri » trien thi, tien tri, trieu thi
ban dung » van dung, dan dung, tan dung
luan ket » lien ket
ket luan » ket qua, te luan, dat luan
kinh » dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ban dung khoa luan ket luan trien tri kinh ((doanh thua) OR (doanh khoa)) thien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ban dung khoa luan ket luan trien tri kinh ((doanh thua) OR (doanh khoa)) thien".
• Adding a wildcard symbol may retrieve word variants: ban dung khoa luan ket luan trien tri kinh ((doanh thua) OR (doanh khoa)) thien*.