Perhaps you should try some spelling variations:
nam duoc » nam thuoc, da duoc, dat duoc
danh vai » danh sai, danh va, doanh van
hieu van » thien van, lieu va, hieu ve
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
ma danh » va danh, ma dan, mo danh
duoc ma » duoc lam
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
xay hoi » tay hoi, cay phoi, gay thoi
ky dang » ky nang, ky danh

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ((xay hoi) OR (xa hoi)). ((hieu van) OR (hieu va)) nam duoc ma danh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang ((xay hoi) OR (xa hoi)). ((hieu van) or (hieu va)) nam duoc ma danh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ((xay hoi) OR (xa hoi)). ((hieu van) or (hieu va)) nam duoc ma danh vai cua tre*.