Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
cham xuc » cam xuc, chat xuc, cham soc
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc va
vi cuu » vi luu, vinh cuu

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: toc sach ((y nang) OR (v nang)) ma hoa. ((hieu ve) OR (hieu van)) cham xuc va dinh vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((y nang) or (v nang)) ma hoa. ((hieu ve) OR (hieu van)) cham xuc va dinh vi cuu tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach ((y nang) or (v nang)) ma hoa. ((hieu ve) OR (hieu van)) cham xuc va dinh vi cuu tre*.