Perhaps you should try some spelling variations:
vien dai » hien dai
danh hai » dang hai, lanh hai, manh hai
tu sach » thu sach, su sach, te sach
hai cua » thai cua, dai cua, hoi cua
truc va » thuc va, thuc vat, trung va
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cao
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 y nang x hoi. hieu ((va cam) OR (vien dai)) ((xuc va) OR (truc va)) danh hai cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((va cam) or (vien dai)) ((xuc va) or (truc va)) danh hai cua tre*.