Perhaps you should try some spelling variations:
hinh thai » sinh thai, tinh thai, dinh thi
nhanh thi » nhanh thai, nhanh thuc, nhan tai
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach ty, sach kem
va cam » va cham, va cac, va cao
nang o » nang co, nang ho, nang ro
o hai » co hai, so hai, o lai

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: te ((sach ky) OR (sach y)) nang o hai. hieu va cam xuc van ((nhanh thi) OR (hinh thai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sach y)) nang o hai. hieu va cam xuc van ((nhanh thi) or (hinh thai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sach y)) nang o hai. hieu va cam xuc van ((nhanh thi) or (hinh thai)) cua tre*.