Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cua viet » hoa viet, cua vat, cua dieu
tu sach » thu sach, te sach, tu cach
van anh » van thanh, tuan anh, van minh
duc van » duc va, duc tan, duc manh
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
su sach » so sach, vu sach
ca viet » va viet, co viet, hoa viet
y nang » ky nang, ly nang, v nang
anh vi » hanh vi, anh va, anh ve
x hoi » xa hoi, o hoi, x ho

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: ((tu sach) OR (su sach)) y nang x hoi. hieu van cam duc van anh vi ((cua viet) OR (ca viet))~.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) y nang x hoi. hieu van cam duc van anh vi ((cua viet) or (ca viet))*.