Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh lap » thanh san, phan lap, thanh hai
hanh lai » hanh lam, hanh tai, thanh loi
chau tre » chay tren, chau tho, cho tre
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
xuc ban » duc ban, cuc ban, quoc ban
ty nang » ky nang, ty xang, ty hang
ve cam » ve cham, ve cac, va cam
o hoi » co hoi, o hoc, o hai
x hoi » xa 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: thuat sach ty nang ((x hoi) OR (o hoi)). hieu ve cam xuc ban ((hanh lai) OR (thanh lap)) chau tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty nang ((x hoi) OR (o hoi)). hieu ve cam xuc ban ((hanh lai) or (thanh lap)) chau tre~".
• Adding a wildcard symbol may retrieve word variants: thuat sach ty nang ((x hoi) OR (o hoi)). hieu ve cam xuc ban ((hanh lai) or (thanh lap)) chau tre*.