Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
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
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa
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 vai 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 vai 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 vai cua tre*.