Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
dai nuoc » dat nuoc, dau nuoc, dai luoc
va thanh » ban thanh, va tinh, le thanh
ky dang » ky nang, ky danh
xay hoi » tay hoi, cay phoi, gay thoi
cua tre » cua te, cuu tre, cua triet
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
ca cua » co cua

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: vu sac ky dang ((xay hoi) OR (xa hoi)). hieu hien dai nuoc ((va thanh) OR (gia thanh)) ca cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky dang ((xay hoi) OR (xa hoi)). hieu hien dai nuoc ((va thanh) or (gia thanh)) ca cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu sac ky dang ((xay hoi) OR (xa hoi)). hieu hien dai nuoc ((va thanh) or (gia thanh)) ca cua tre*.