Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
su sach » vu sach
luc bat » suc bat, luc nhat, luat bat
luc ban » duc ban, cuc ban, luc van
cua tre » cua te, cuu tre, cua triet
hieu ke » hieu kem, chieu ke, hieu ky
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
so sach » so sanh, bo sach, co sach
ve cua » le cua, de cua, te cua
ke cau » ket cau

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 dang xa hoi. hieu ke cau ((luc ban) OR (luc bat)) thanh ve cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ky dang xa hoi. hieu ke cau ((luc ban) OR (luc bat)) thanh ve cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky dang xa hoi. hieu ke cau ((luc ban) OR (luc bat)) thanh ve cua tre*.