Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
ban nhanh » ban hanh, ban thanh, ban nhan
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, tu cach
cam duc » cam xuc, cao duc, pham duc
hai cua » thai cua, dai cua, hoi cua
dao duc » giao duc, tao duoc
nang ma » tang ma, sang ma, nang cao
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
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: ((tu sach) OR (te sach)) ky nang ma hoi. hieu van ((cam duc) OR (dao duc)) ban nhanh hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ky nang ma hoi. hieu van ((cam duc) or (dao duc)) ban nhanh hai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ky nang ma hoi. hieu van ((cam duc) or (dao duc)) ban nhanh hai cua tre*.