Perhaps you should try some spelling variations:
dieu hien » dieu khien, dieu kien, bieu hien
thanh hai » thanh phan, thanh hoa, thanh san
hien cac » thien cac, vien cac, hieu cac
hanh lai » hanh lam, hanh tai, thanh lap
su sach » vu sach
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
so sach » so sanh, bo sach, co sach
cac lo » cac lop, cac co, cac bo
cua te » cua tu
lo va » lo van, lao va, ly va

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: ((su sach) OR (so sach)) ky lang xa hoi. dieu hien cac lo va ((hanh lai) OR (thanh hai)) cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky lang xa hoi. dieu hien cac lo va ((hanh lai) or (thanh hai)) cua te~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky lang xa hoi. dieu hien cac lo va ((hanh lai) or (thanh hai)) cua te*.