Perhaps you should try some spelling variations:
cam truc » cau truc, nam truc, lam truoc
vanh dai » van dai, vanh tai, lanh dao
tu sach » thu sach, su sach, te sach
cuu tre » cau tren, cau treo
va vanh » va van, va danh, va hanh
truc va » thuc va, thuc vat, trung va
cua tre » cua te, cua triet, dua tren
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
ty nang » ky nang, ty xang, ty hang
s_ hai » su hai, so hai
va cam » va cham, va cac, va cao

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