Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cua cau » cua cac, cua chu, cua cay
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, 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: thu sach y nang ((x hoi) OR (x ho)). hieu ve cam xuc va hanh vai ((cua tu) OR (cua cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang ((x hoi) OR (x ho)). hieu ve cam xuc va hanh vai ((cua tu) or (cua cau))~".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((x hoi) OR (x ho)). hieu ve cam xuc va hanh vai ((cua tu) or (cua cau))*.