Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nhanh ha » thanh hoa, thanh hai, khanh hoa
va nhanh » va thanh, va hanh, va nhan
hieu van » hieu va, thien van, lieu va
ban tuc » ban tu, ban tum, ban thuoc
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, dua tren
su sach » so sach, vu sach
v nang » va nang, vu nang, van nang
co hoi » co hoc, co loi
tuc va » thuc va, truc va, tuc xa

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 ((ly nang) OR (v nang)) co hoi. hieu van ban tuc va nhanh ha ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ly nang) or (v nang)) co hoi. hieu van ban tuc va nhanh ha ((cua tre) OR (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: su sach ((ly nang) or (v nang)) co hoi. hieu van ban tuc va nhanh ha ((cua tre) OR (cua triet))*.