Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
luan cuong » luan cong, luan luong, xuan cuong
cuong dung » tuong duong, ung dung, thong dung
dung thanh » duong thanh, dong thanh, dang thanh
hieu sach » chieu sach, hieu cach, hieu cac
dien sach » dien anh
phi dau » phan dau
pho da » pho ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sach) OR (dien sach)) - canh tranh luan cuong dung thanh ((phi dau) OR (pho da))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu sach) OR (dien sach)) - canh tranh luan cuong dung thanh ((phi dau) OR (pho da))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sach) OR (dien sach)) - canh tranh luan cuong dung thanh ((phi dau) OR (pho da))*.