Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
hieu van » hieu va, thien van, lieu va
cau phuc » cau truc, chau phu, huu phuc
hanh dai » hanh tai, hanh dao, vanh dai
va nang » van nang, da nang, cam nang
van cau » van dau, van hau, van chat
phuc va » phuc vu, thuc va, chuc va
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
v nang » vu nang, van nang, voi nang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach ((v nang) or (va nang)) ma hoi. hieu van cau phuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ((v nang) OR (va nang)) ma hoi. hieu van cau phuc va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: nuoc sach ((v nang) or (va nang)) ma hoi. hieu van cau phuc va hanh dai cua tre*.