Perhaps you should try some spelling variations:
thanh vi » thanh va, thanh ve, nhanh vi
chat huu » pham huu
te sach » toc sach
huu ban » huu bang, huu han, cuu ban
sach ty » sach y, sach tu, sach thu
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
5 hoi » o hoi

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 ((5 hoi) or (xa hoi)). hieu va chat huu ban ((thanh vi) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang ((5 hoi) OR (xa hoi)). hieu va chat huu ban ((thanh vi) OR (hanh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang ((5 hoi) or (xa hoi)). hieu va chat huu ban ((thanh vi) or (hanh vi)) cua tre*.