Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
ky sang » ky dang, ky tang, duy sang
lam xuc » lam duoc
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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 ((ky sang) OR (ky nang)) ma hoa. hieu van ((lam xuc) OR (cam xuc)) ban thanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky sang) OR (ky nang)) ma hoa. hieu van ((lam xuc) or (cam xuc)) ban thanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky sang) OR (ky nang)) ma hoa. hieu van ((lam xuc) or (cam xuc)) ban thanh vi cua tre*.