Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
doan ban » doanh ban, toan ban, doan van
van doan » van doanh, van toan, van hoan
cham cuu » cap cuu, chat cua
cham luc » cham soc, nhan luc, chat lua
ban cua » ban quan
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang

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 ((y nang) OR (v nang)) xa hoi. hieu van ((cham luc) or (cham cuu)) van doan ban cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y nang) OR (v nang)) xa hoi. hieu van ((cham luc) OR (cham cuu)) van doan ban cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((y nang) OR (v nang)) xa hoi. hieu van ((cham luc) or (cham cuu)) van doan ban cua tre*".