Perhaps you should try some spelling variations:
vanh dai » van dai, vanh tai, lanh dao
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
va vanh » va van, va danh, va hanh
dai cuu » dai cua, dai huu
cuu tre » cua tre, cau tren, cau treo
s_ hai » su hai, so hai
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa

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: so sach ty nang ((_ hai) OR (s_ hai)). hieu va cam tuc va vanh dai cuu tre~.
• Adding a wildcard symbol may retrieve word variants: so sach ty nang ((_ hai) or (s_ hai)). hieu va cam tuc va vanh dai cuu tre*.