Perhaps you should try some spelling variations:
nhiem nghe » nghiep nghe, hiem ngheo
cua triet » cua viet, su triet, va triet
nghe nam » nghe lam, nghiep nam, nghe nano
danh sai » dung sai, danh bat, danh dau
dua tren » dung tren
su sach » vu sach
so sach » so sanh, bo sach, co sach
tang ma » mang may, tang van
xe danh » le danh, te danh, xe dan
y tang » ky tang, 6 tang, 7 tang
ma hoi » mai hoi, xa hoi, ma hoa

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: ((su sach) OR (so sach)) y tang ma hoi. nhiem nghe nam thu xe danh sai ((dua tren) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) y tang ma hoi. nhiem nghe nam thu xe danh sai ((dua tren) or (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) y tang ma hoi. nhiem nghe nam thu xe danh sai ((dua tren) or (cua triet))*.