Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
thai cua » than cua, tai cuc, tri cua
va tham » van tham, va cham, va thanh
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
va cam » va cham, va cac, va cao

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 lang) or (ky dang)) xa hoi. lieu ((va cam) or (va tham)) xuc van thanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ky lang) OR (ky dang)) xa hoi. lieu ((va cam) OR (va tham)) xuc van thanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ((ky lang) or (ky dang)) xa hoi. lieu ((va cam) or (va tham)) xuc van thanh thai cua tre*.