Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thu sach » tu sach, thuat sach, thuoc sach
thai cua » than cua, tai cuc, tri cua
van hanh » van thanh, ban hanh, van anh
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 hanh thai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ky lang) OR (ky dang)) xa hoi. lieu ((va cam) OR (va tham)) xuc van hanh 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 hanh thai cua tre*.