Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
vu nang » vuc nang, va nang, vu dang
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, cua triet
v nang » va nang, van nang, voi nang
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
di cua » dai cua, doi cua, de cua

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) or (vu nang)) xa hoi. hieu va cam luc va thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((v nang) OR (vu nang)) xa hoi. hieu va cam luc va thanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ((v nang) or (vu nang)) xa hoi. hieu va cam luc va thanh di cua tre*.