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

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