Perhaps you should try some spelling variations:
thanh vi » thanh va, thanh ve, nhanh vi
chat xuc » chat huu, cam xuc, chao xu
tu sach » thu sach, su sach, te sach
xuc ban » duc ban, cuc ban, quoc 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: tu sach ty nang ((5 hoi) or (xa hoi)). hieu va chat xuc ban ((thanh vi) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((5 hoi) OR (xa hoi)). hieu va chat xuc ban ((thanh vi) OR (hanh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((5 hoi) or (xa hoi)). hieu va chat xuc ban ((thanh vi) or (hanh vi)) cua tre*.