Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
chat sac » hat sac, chat va, chat ban
van lang » van nang, va lang, van hang
so sach » so sanh, co sach, hoc sach
hanh va » hang va, hanh vi
sac van » cac van, san van, sat van
ve chat » va chat, van chat
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
vu sach » vu bach, su sach, vu khach
bo sach » co sach, hoc sach
su tien » su kien, su hien, tu tieng

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: ((((so sach) OR (bo sach))) OR (vu sach)) van lang xa hoi. hieu ve chat sac van hanh va su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((so sach) OR (bo sach))) or (vu sach)) van lang xa hoi. hieu ve chat sac van hanh va su tien~".
• Adding a wildcard symbol may retrieve word variants: ((((so sach) OR (bo sach))) or (vu sach)) van lang xa hoi. hieu ve chat sac van hanh va su tien*.