Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cham luc » nhan luc, cham cuu, chat lua
hieu ve » hieu va, hieu van
van anh » van thanh, tuan anh, van minh
anh tai » hanh tai, anh thai, vanh tai
tai cuu » tai cuc, tai buu, tai cua
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
x hoi » o hoi, x ho, 5 hoi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang ((x hoi) OR (xa hoi)). hieu ve ((cham luc) OR (cham soc)) van anh tai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y nang ((x hoi) or (xa hoi)). hieu ve ((cham luc) OR (cham soc)) van anh tai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang ((x hoi) or (xa hoi)). hieu ve ((cham luc) OR (cham soc)) van anh tai cuu tre*.