Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cau trieu » cac trieu, cau triet, chua trieu
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
tang xa » trang xa, tang ma, lang xa
tuc ban » thuc ban, truc ban, tu ban
sach 2 » sach y
2 tang » 2 thang, 6 tang, 7 tang
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach 2 tang xa hoi. hieu ((ve cam) or (ve cac)) tuc ban thanh vi cau trieu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach 2 tang xa hoi. hieu ((ve cam) OR (ve cac)) tuc ban thanh vi cau trieu.
• Adding a wildcard symbol may retrieve word variants: su sach 2 tang xa hoi. hieu ((ve cam) or (ve cac)) tuc ban thanh vi cau trieu*.