Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua cau » cua cac, cua chu, cua cay
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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: thu sach y nang x hoi. hieu va cam xuc va hanh vi ((cua tu) OR (cua cau))~.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang x hoi. hieu va cam xuc va hanh vi ((cua tu) or (cua cau))*.