Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
cau treo » cau theo, cau tren, cau triet
tac danh » sach danh, cac doanh, cac dan
vien cac » vien bach, vien dai, vien da
cua tre » cua te, cuu tre, cua triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cac toc » cac toi, cac nuoc, cac thoi
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
ta danh » tao danh, tap danh, tra danh

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. hieu vien cac toc ((ta danh) OR (tac danh)) vai ((cua tre) OR (cau treo))~".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu vien cac toc ((ta danh) OR (tac danh)) vai ((cua tre) OR (cau treo))*.