Perhaps you should try some spelling variations:
tranh luat » trinh luat, tranh luan, trinh luan
luat nhung » luat chung, luat thuong, thuat nhung
duong manh » duong van
doi chieu » doc hieu, doi chi, mot chieu
cong manh » cong danh, cong thanh, hoang manh
ho chieu » theo chieu, hoc thieu, mot chieu
toan tap » toan ban

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 chieu) OR (doi chieu)) sach - canh tranh luat nhung ((cong manh) OR (duong manh)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) sach - canh tranh luat nhung ((cong manh) OR (duong manh)) toan tap~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) sach - canh tranh luat nhung ((cong manh) OR (duong manh)) toan tap*.