Perhaps you should try some spelling variations:
sieu vien » sieu viet, sinh vien, dieu kien
sach ky » sac ky, sach y, sach ty
te sach » toc sach
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
va cau » van cau, va cac, va cao
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky dang xa hoi. sieu vien bach ((xuc va) or (tuc va)) thanh ((va cau) OR (va dau)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xa hoi. sieu vien bach ((xuc va) OR (tuc va)) thanh ((va cau) OR (va dau)) tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xa hoi. sieu vien bach ((xuc va) or (tuc va)) thanh ((va cau) OR (va dau)) tren*".