Perhaps you should try some spelling variations:
chat xuc » chat huu, cam xuc, chao xu
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
va chat » van chat, va phat, va cham
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
hanh d » hanh de, hanh _, hanh y
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: tu sach ky nang o hoi. hieu va chat xuc ban ((anh d) or (hanh d)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang o hoi. hieu va chat xuc ban ((anh d) OR (hanh d)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang o hoi. hieu va chat xuc ban ((anh d) or (hanh d)) cua tre*.