Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
duc manh » suc manh, duc anh, duc minh
tang tai » hang tai, dung tai, sang tao
tai cua » thai cua, tai cuc, tri cua
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, tu cach
qua cac » cua cac
tai hoi » tai khoi, dai hoi, tai hai
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
cua tre » cua te, cuu tre, cua triet

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) or (te sach)) ky tang tai hoi. hieu qua cac ((xuc van) or (duc manh)) hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky tang tai hoi. hieu qua cac ((xuc van) OR (duc manh)) hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky tang tai hoi. hieu qua cac ((xuc van) or (duc manh)) hanh tai cua tre*.