Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
ly nang » ky nang, ly hang, ly vang
hieu ve » hieu va, hieu van
dao duc » giao duc, tao duoc
va hang » van hang, va nang, va lang
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, v nang, may nang
ve dao » de dao, va dao, ve bao
va cua » va chua, via cua, ca cua

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) OR (ly nang)) xa hoi. hieu ve dao duc va hang va cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((y nang) OR (ly nang)) xa hoi. hieu ve dao duc va hang va cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((y nang) OR (ly nang)) xa hoi. hieu ve dao duc va hang va cua tre*.