Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
luan khong » luan phong, luan phuong, luong khong
khong dung » thong dung, phuong dung, cuong dung
dung dan » dung dat, dung san, tung dan
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau
hoi chu » hoi chuc
ho cuu » ho chu, ho cua, so cuu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho cuu) OR (hoi chu)) tinh - canh tranh luan khong dung dan ((phan cau) OR (phan dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho cuu) or (hoi chu)) tinh - canh tranh luan khong dung dan ((phan cau) OR (phan dau))~".
• Adding a wildcard symbol may retrieve word variants: ((ho cuu) or (hoi chu)) tinh - canh tranh luan khong dung dan ((phan cau) OR (phan dau))*.