Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh dan » thanh san, thanh van, thanh dat
va thanh » gia thanh, ban thanh, va tinh
cua viet » ca viet, hoa viet, cua vat
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
dan cua » dan ca, ban cua, dai cua
va cam » va cham, va cac, va cao
x hoi » xa hoi, 5 hoi
o hoi » co hoi, o hoc, o hai

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: thuat sach ty nang ((((x hoi) OR (x ho))) OR (o hoi)). hieu va cam duc va thanh dan cua viet~.
• Adding a wildcard symbol may retrieve word variants: thuat sach ty nang ((((x hoi) or (x ho))) or (o hoi)). hieu va cam duc va thanh dan cua viet*.