Perhaps you should try some spelling variations:
thi hanh » thi thanh
su sach » vu sach
danh di » danh du, xanh di, danh dien
cau luc » cau truc, cau phuc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
hanh xa » hanh va, hanh ma, hanh xu
so sach » so sanh, bo sach, co sach
luc va » duc va, tuc va, loc va
anh va » hanh va
ve cau » ke cau, va cau, ve cac

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)) thi hanh xa hoi. hieu ve cau luc va ((anh va) OR (danh di)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) thi hanh xa hoi. hieu ve cau luc va ((anh va) or (danh di)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) thi hanh xa hoi. hieu ve cau luc va ((anh va) or (danh di)) cua tre*.