Perhaps you should try some spelling variations:
luan triet » luan thiet, luan tieu, luan viet
triet nhan » trien nhan, tri nhan, trien nha
ngan dung » ngan hang, van dung, dan dung
dung khoa » dung cho
nhan kinh » than kinh, nha kinh, nhan sinh
luan ket » lien ket
ket luan » ket qua, te luan, dat luan
hoa tan » hoa van, hoa tin, hoa han

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: "ngan dung khoa luan ket luan triet nhan kinh doanh ((hoa tan) OR (hoa dan))~".
• Adding a wildcard symbol may retrieve word variants: ngan dung khoa luan ket luan triet nhan kinh doanh ((hoa tan) OR (hoa dan))*.