Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
duoc gia » duoc giao, quoc gia, luoc gia
thanh vi » hanh vi, thanh va, thanh ve
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
duc gia » quoc gia
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
vi cua » vai cua, di 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: tu sac ky ((nang xa) OR (nang ma)) hoi. hieu vien bach ((duoc gia) OR (duc gia)) thanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((nang xa) or (nang ma)) hoi. hieu vien bach ((duoc gia) OR (duc gia)) thanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang xa) or (nang ma)) hoi. hieu vien bach ((duoc gia) OR (duc gia)) thanh vi cua tre*.