Perhaps you should try some spelling variations:
thien van » thi van
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
va danh » va dinh, va dan, va hanh
nam duc » nam duoc, pham duc, nam thuc
ky dang » ky nang, ky danh
xay hoi » tay hoi, cay phoi, gay thoi
sac ky » cac ky, sai ky
ca cua » co cua
te sac » te sach, te cac, te san

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 sac ky dang ((xay hoi) OR (xa hoi)). thien van nam duc ((ban hanh) OR (va danh)) ca cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky dang ((xay hoi) OR (xa hoi)). thien van nam duc ((ban hanh) or (va danh)) ca cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sac ky dang ((xay hoi) OR (xa hoi)). thien van nam duc ((ban hanh) or (va danh)) ca cua tre*.