Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, va cam, ve cai
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
va cua » va chua, via cua, ca cua
x hoi » o hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y nang ((x hoi) OR (xa hoi)). hieu ((ve cam) or (ve cac)) luc va hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang ((x hoi) OR (xa hoi)). hieu ((ve cam) OR (ve cac)) luc va hanh va cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang ((x hoi) OR (xa hoi)). hieu ((ve cam) or (ve cac)) luc va hanh va cua tre*".