Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
ban hanh » ban hang
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
nang xa » nang x, lang xa, nang ma
lam duc » lam duoc, pham duc, nam duoc
duc ban » duc tan, duc van, dua ban
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
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 vu nang xa hoi. ((hieu van) or (thien van)) lam duc ban hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach vu nang xa hoi. ((hieu van) OR (thien van)) lam duc ban hanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach vu nang xa hoi. ((hieu van) or (thien van)) lam duc ban hanh va cua tre*.