Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham xuc » cam xuc, chat xuc, cham soc
hanh vai » hanh vi, hanh va, hanh tai
bo sach » co sach, hoc sach
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
ca tren » cau tren, cu tren, la tren
xuc va » duc va, tuc va, luc va
vai ca » vai cac, vai cua, bai ca
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach ky nang ((x hoi) or (o hoi)). hieu van cham xuc va hanh vai ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky nang ((x hoi) OR (o hoi)). hieu van cham xuc va hanh vai ca tren.
• Adding a wildcard symbol may retrieve word variants: bo sach ky nang ((x hoi) or (o hoi)). hieu van cham xuc va hanh vai ca tren*.