Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
thu sach » tu sach, thuat sach, thuoc sach
nang mai » nang ma, nang tai, lang mai
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang mai hoi. hieu ((va cam) or (va cao)) xuc va thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang mai hoi. hieu ((va cam) OR (va cao)) xuc va thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang mai hoi. hieu ((va cam) or (va cao)) xuc va thanh dai cua tre*.