Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
hanh lam » thanh lap, hanh kem, hanh va
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
cuu tre » cua tre, cau tren, cau treo
su tien » su kien, su hien, tu tieng
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
va cam » va cham, va cac, va cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach v nang xa hoi. hieu va cam xuc van hanh lam ((cuu tre) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v nang xa hoi. hieu va cam xuc van hanh lam ((cuu tre) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: toc sach v nang xa hoi. hieu va cam xuc van hanh lam ((cuu tre) or (su tien))*.