Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
sach ky » sach y, sach ty, sach kem
van cam » van nam, van lam, van cau
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, luc va
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) OR (sac ky)) ((mang may) OR (nang x)) hoi. hieu van cam xuc va hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) ((mang may) or (nang x)) hoi. hieu van cam xuc va hanh vi cua tre*.