Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa
di cua » dai cua, doi cua, de cua
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang ((xa hoi) or (o hoi)). hieu ve cam tuc va thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang ((xa hoi) OR (o hoi)). hieu ve cam tuc va thanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang ((xa hoi) or (o hoi)). hieu ve cam tuc va thanh di cua tre*.