Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va nang » van nang, da nang, cam nang
va hang » van hang, va lang, va hanh
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
ve dao » de dao, va dao, te dao
va cua » va chua, via cua, ca cua
ve bao » te bao, va bao

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